A man from Camden has been accused of developing chemical weapons for al-Shabab - the group behind the deadly attack on a shopping mall in Nairobi.
24 year old Madhi Hashi is allegedly a member of an "elite al-Shabab suicide bombing unit" according to The Times newspaper.
Al-Shabab are linked to al-Qaida and claimed responsibility for the attack on Westgate Mall in Nairobi in which 67 people were killed.
Hashi is currently awaiting trial in New York, accused of travelling to Somalia to receive weapons training from the group and being "deployed in combat" for them.
A Foreign Office spokesman said: "The FCO became aware of Hashi's detention by US authorities on terrorism-related charges in 2012."
Somalian-born Hashi came to Britain in 1995 and became a citizen in 2004, but his citizenship was revoked last year by Home Secretary Theresa May.
A man from east London, Jermaine Grant, will appear in court in Kenya today to face allegations that he worked as a bomb maker for a Somalian terror group.
The funeral of the son of a London aristocrat, who died in police custody, has been held in Kenya.
Officers had suggested Alexander Monson died from the effects of smoking cannabis. But tests show he suffered massive head injuries.
Two separate pathology reports concluded that the 28-year-old suffered a fatal ‘blunt force trauma’ to the back of the head, leading to swelling on the brain. Lord Monson, a London-based journalist, says: ‘We now know that whatever caused my son’s death was an attack."
The family has instructed lawyers to take action against the police, while the Foreign Office is keeping a close watch on developments. Yesterday 250 mourners came from all over the world to Diani, the Kenyan resort where Alexander died, for his funeral.
Two men have gone on trial in Kenya for the murder of a Hertfordshire businessman and the abduction of his wife.
Judith Tebbutt from Bishops Stortford was snatched from a remote beach resort near the Somali border last September.
Her husband David was shot dead in the raid by suspected pirates.
Mrs Tebbutt was eventually released in March.
The two men, from East Africa, are facing charges of murder, violent robbery and kidnap.
Judith Tebbutt, who was kidnapped from a beach in Kenya in a raid which left her husband David dead, has been freed by her captors.She was taken in September last year while staying at the Kiwayu Safari Village near the Kenya Somali border.