As it happened: Algeria hostage siege

Key Points

• Hours after Algerian forces moved in against hostage-takers at a desert gas facility in eastern Algeria, state news agency APS says the military operation has ended.
• Islamist gunmen attacked a bus and a complex at In Amenas on Wednesday, taking foreign and local workers hostage.
• It is now clear that some of the hostages were killed and wounded in the Algerian operation.
• Although Algeria says some hostages were freed, UK PM David Cameron warns of "further bad news".
• Algeria has identified the gunmen as militants who follow Mokhtar Belmokhtar, a veteran Islamist with al-Qaeda links.
• The gunmen have reportedly said their attack is a reaction to French military intervention in neighbouring Mali.