He was arrested at 12:20 by officers from the Metropolitan Police Service’s Counter Terrorism Command (SO15), supported by colleagues from Avon and Somerset and Devon and Cornwall Police, on suspicion of being involved in the preparation for acts of terrorism under Section 5 of the Terrorism Act.
Police said: "Today’s arrest was pre-planned and intelligence-led as part of an investigation into Northern Ireland-related terrorism being led by SO15 in collaboration with Police Service of Northern Ireland (PSNI) and the South West Counter Terrorism Intelligence Unit. No armed police were involved in today’s arrest.
"The public can be reassured that there is no intelligence to suggest an immediate threat to our communities," police added.
Exminister residents 'shocked and surprised' by terrorism raid
"You wouldn't think it would happen here... having said that you look at the other places people have been arrested in they were quiet too."
"[I'm] very surprised by the number of helicopters swooping by all the time."
"It's a quiet little estate nothing much happens. You think it's very sleepy and green, but it's worrying to think there might be something untoward going on."
Plymouth nursery reported to Ofsted after child was left unattended
Thursday: There may be a fair amount of cloud around but with some sunshine breaking through at times. The bulk of the day will be dry but there is the risk of a few thundery showers here and there. Maximum temperature: 23C (73F).
BBCCopyright: BBC
Girls, 14, rescued by helicopter after being washed out of kayaks by huge waves
A nursing home in Yelverton, that's repeatedly been rated "inadequate" by inspectors, is closing down tomorrow.
Sixteen residents at Devonia House are having to move out. Devon County Council has helped find new homes for all residents who are elderly and have dementia.
The home was condemned as unsafe by Care Quality Commission inspectors and put into special measures in April 2015.
NI terrorism: Police search address in Exminster
Chris Ellis
BBC News Online
Police are searching an address in Exminster in Devon after a serviceman was arrested earlier today.
The Cornwall-based charity Shelterbox has confirmed it's sending a team to Italy in the aftermath of the earthquake.
Initial assessment work is already under way and the charity hopes to be on the scene within 24 hours.
It will be able to provide tents and other equipment to people who have been made homeless by the disaster.
BBCCopyright: BBC
NI terrorism: Arrest and searches thought to be linked to arms dumps
Ben Chapple
BBC News Online
A terrorism-related arrest and searches are understood to be connected to two arms dumps found near Larne, Northern Ireland, earlier this year.
The 30-year-old man was detained in Somerset with properties being searched in Larne and South Devon, where a wood has also been cordoned off.
PSNICopyright: PSNI
In March, the Police Service of Northern Ireland said they had uncovered a "significant terrorist hide" of bomb-making components and explosives at Carnfunnock Country Park.
In May, a second significant arms cache, including an armour-piercing improvised rocket and two anti-personnel mines, was found at Capanagh Forest, near Larne.
Both of the weapons dumps are thought to be linked to dissident republican paramilitaries.
Fears raised over future of Exeter Deaf Academy following major investigation
The 30-year-old serviceman was arrested in a pre-planned swoop in Somerset on Wednesday.
The operation involved searches at a house and wooded area in south Devon.
In Northern Ireland, officers have also searched a number of properties in Larne, Co Antrim - near the two forest parks where the weapons dumps were discovered earlier this year.
The man, who is believed to be from Northern Ireland, was detained on suspicion of preparation for acts of terrorism.
Terror alert as armed forces member arrested and officers search Devon locations
The 30-year-old man was detained by officers from the Metropolitan Police Service's Counter Terrorism Command.
BBCCopyright: BBC
Detectives in England are also carrying out searches at an address in South Devon.
The man under arrest is suspected of being involved in preparing for acts of terrorism.
Latest travel in Devon and Cornwall
BBC Travel
In Countess Wear, the A379 Bridge Road from Countess Wear Roundabout traffic is slow in both directions
In Exeter, inbound traffic on the A377 is slow going between A30 (Alphington Junction) and B3212 (Exe Bridges)
In Plympton, expect delays on Deep Lane and Sandy Road both ways, around the Ridgeway. Due to roadworks and temporary traffic lights
Woods searched after arrest in NI terrorism investigation - what do we know so far?
Chris Ellis
BBC News Online
A serving member of the armed forces has been arrested in Somerset as part of an investigation into terrorism related to Northern Ireland
Officers from the Metropolitan Police Counter Terrorism Command detained the man
He is being questioned at a police station in the West Country about alleged terrorism offences relating to Northern Ireland
Officers in Northern Ireland are carrying out searches connected to the inquiry, and police in south Devon are searching a property and a wood near Exeter
It is thought the investigation is connected to the discovery of two major dissident republican arms dumps in Northern Ireland
The Ministry of Defence says it will fully assist the investigation
Live Reporting
All times stated are UK
Get involved
View more on twitterView more on twitter BBCCopyright: BBC BBCCopyright: BBC - Police are searching a house in Exminster and woods nearby as part of a counter terrorism operation
- It follows the arrest of a British armed forces serviceman this afternoon, in an operation linked to the suspected planning of attacks in Northern Ireland
- Police sources in the South West want to reassure the public there is no intelligence of a terrorist threat to Devon and Cornwall
- But they say they are working with the counter terrorism branch of Scotland Yard, SO 15, who are leading the operation
- The woodland near Exeter is being searched for terrorism related materials
BBCCopyright: BBC PSNICopyright: PSNI BBCCopyright: BBC BBCCopyright: BBC BBCCopyright: BBC - In Countess Wear, the A379 Bridge Road from Countess Wear Roundabout traffic is slow in both directions
- In Exeter, inbound traffic on the A377 is slow going between A30 (Alphington Junction) and B3212 (Exe Bridges)
- In Plympton, expect delays on Deep Lane and Sandy Road both ways, around the Ridgeway. Due to roadworks and temporary traffic lights
- A serving member of the armed forces has been arrested in Somerset as part of an investigation into terrorism related to Northern Ireland
- Officers from the Metropolitan Police Counter Terrorism Command detained the man
- He is being questioned at a police station in the West Country about alleged terrorism offences relating to Northern Ireland
- Officers in Northern Ireland are carrying out searches connected to the inquiry, and police in south Devon are searching a property and a wood near Exeter
- It is thought the investigation is connected to the discovery of two major dissident republican arms dumps in Northern Ireland
- The Ministry of Defence says it will fully assist the investigation
Latest PostOur live coverage across the day
Live updates for Devon and Cornwall have finished for the day, but we'll be back at 08:00 on Thursday with the latest news, sport, travel and weather.
Don't forget Spotlight on BBC One later. There will also be news through the night on your BBC Local Radio station.
NI terrorism: Royal Marine arrested, police searches in Larne, Ireland, and Exminster
A 30-year-old man has been arrested in Somerset today on suspicion of terrorism offences.
He was arrested at 12:20 by officers from the Metropolitan Police Service’s Counter Terrorism Command (SO15), supported by colleagues from Avon and Somerset and Devon and Cornwall Police, on suspicion of being involved in the preparation for acts of terrorism under Section 5 of the Terrorism Act.
Police said: "Today’s arrest was pre-planned and intelligence-led as part of an investigation into Northern Ireland-related terrorism being led by SO15 in collaboration with Police Service of Northern Ireland (PSNI) and the South West Counter Terrorism Intelligence Unit. No armed police were involved in today’s arrest.
"The public can be reassured that there is no intelligence to suggest an immediate threat to our communities," police added.
Exminister residents 'shocked and surprised' by terrorism raid
"You wouldn't think it would happen here... having said that you look at the other places people have been arrested in they were quiet too."
"[I'm] very surprised by the number of helicopters swooping by all the time."
"It's a quiet little estate nothing much happens. You think it's very sleepy and green, but it's worrying to think there might be something untoward going on."
Plymouth nursery reported to Ofsted after child was left unattended
Plymouth Herald
A Plymouth nursery has been reported to Ofsted after a child was left unattended on its premises.
Weather: Look forward to the sun breaking through
Holly Green
BBC Weather
Thursday: There may be a fair amount of cloud around but with some sunshine breaking through at times. The bulk of the day will be dry but there is the risk of a few thundery showers here and there. Maximum temperature: 23C (73F).
Girls, 14, rescued by helicopter after being washed out of kayaks by huge waves
Plymouth Herald
Two 14-year-old girls who were knocked out of their kayaks by huge waves and had to scramble up the cliffs were rescued by RNLI lifeguards and a rescue helicopter.
NI terrorism: Police searches after Royal Marine arrested - what do we know so far?
Simon Hall, Home Affairs Correspondent
BBC Spotlight
Councillor Richard Haddock may be forced to make public apology
Torquay Herald Express
A leading Torbay councillor is facing an official inquiry into his conduct.
Residents at troubled nursing home set to move out
BBC Radio Devon
A nursing home in Yelverton, that's repeatedly been rated "inadequate" by inspectors, is closing down tomorrow.
Sixteen residents at Devonia House are having to move out. Devon County Council has helped find new homes for all residents who are elderly and have dementia.
The home was condemned as unsafe by Care Quality Commission inspectors and put into special measures in April 2015.
NI terrorism: Police search address in Exminster
Chris Ellis
BBC News Online
Police are searching an address in Exminster in Devon after a serviceman was arrested earlier today.
The arrest of the man, 30, in Somerset was part of an investigation into terrorism related to Northern Ireland.
Devon and Cornwall Police said: "Searches are being conducted at an address in Exminster" and a "wooded area nearby".
Shelterbox sending a team to Italy earthquake site
BBC Radio Cornwall
The Cornwall-based charity Shelterbox has confirmed it's sending a team to Italy in the aftermath of the earthquake.
Initial assessment work is already under way and the charity hopes to be on the scene within 24 hours.
It will be able to provide tents and other equipment to people who have been made homeless by the disaster.
NI terrorism: Arrest and searches thought to be linked to arms dumps
Ben Chapple
BBC News Online
A terrorism-related arrest and searches are understood to be connected to two arms dumps found near Larne, Northern Ireland, earlier this year.
The 30-year-old man was detained in Somerset with properties being searched in Larne and South Devon, where a wood has also been cordoned off.
In March, the Police Service of Northern Ireland said they had uncovered a "significant terrorist hide" of bomb-making components and explosives at Carnfunnock Country Park.
In May, a second significant arms cache, including an armour-piercing improvised rocket and two anti-personnel mines, was found at Capanagh Forest, near Larne.
Both of the weapons dumps are thought to be linked to dissident republican paramilitaries.
Fears raised over future of Exeter Deaf Academy following major investigation
Exeter Express & Echo
Fears have been raised by Exeter's MP over rumours the government could close Exeter Deaf Academy which is the subject of a major ongoing investigation.
Money raised for family of Newquay tragedy reached £31,000
Claire Jones
BBC News Online
More than £31,000 has been raised on a Just Giving page for a family after a man and his daughter died after getting into difficulty in the sea off Newquay.
Rudy Bruynius and Mckayla Bruynius died after they were swept into the sea from rocks at South Fistral Beach on Friday.
NI terrorism: Armed forces member arrested in Somerset is Royal Marine
Press Association
A Royal Marine is being questioned by detectives investigating Northern Ireland-linked terrorism, understood to be connected to two major dissident republican arms finds.
The 30-year-old serviceman was arrested in a pre-planned swoop in Somerset on Wednesday.
The operation involved searches at a house and wooded area in south Devon.
In Northern Ireland, officers have also searched a number of properties in Larne, Co Antrim - near the two forest parks where the weapons dumps were discovered earlier this year.
The man, who is believed to be from Northern Ireland, was detained on suspicion of preparation for acts of terrorism.
Terror alert as armed forces member arrested and officers search Devon locations
Exeter Express & Echo
Devon and Cornwall Police raised a terror alert after a serving Royal Marine was arrested on suspicion of planning an attack.
Latest weather: A fine day with a risk of showers later
BBC Weather
There are likely to be further showers on and off overnight, and we could even hear the odd rumble of thunder.
It will be another warm and humid night, particularly in built up areas such as Exeter.
Minimum temperature: 14C (57F)
NI terrorism: Larne and Devon searches after armed forces member arrested in Somerset
Chris Ellis
BBC News Online
The arrest of an armed forces member in Somerset over Northern Ireland-related terrorism has been followed by searches in Larne, County Antrim.
The 30-year-old man was detained by officers from the Metropolitan Police Service's Counter Terrorism Command.
Detectives in England are also carrying out searches at an address in South Devon.
The man under arrest is suspected of being involved in preparing for acts of terrorism.
Latest travel in Devon and Cornwall
BBC Travel
Woods searched after arrest in NI terrorism investigation - what do we know so far?
Chris Ellis
BBC News Online