Tripoli, 1 May 2103:
The US Federal Bureau of Investigation (FBI) has released photos of three men who it says were in the grounds of the US Special Mission in Benghazi when it was attacked on 11 September last year. US Ambassador Chris Stevens and three other diplomatic staff died in the attacks.
The photos are grainy but the figures would be recognizable to anyone who knows them.
The FBI says it wants information about the three, who may be able to help in the investigation into the attack and killings. It is asking anyone who can help to e-mail BenghaziTips@ic.fbi.gov or submit information confidentially at https://forms.fbi.gov/benghazi-en .
The FBI appeal can be seen here.