Woolwich murder probe: suspect Michael Adebolajo held in Kenya in 2010

One of the suspects in the Woolwich murder case was arrested in Kenya in 2010, the Foreign Office has confirmed. It said Michael Adebolajo was arrested there and it gave consular assistance “as normal” in the circumstances. He was believed to have been preparing to fight with Somali militant group al-Shabab, a Kenyan government spokesman told the BBC, and was later deported. Confirmation of Michael Adebolajo’s arrest in Kenya in 2010 -preparing, according to the Kenyan authorities, to train and fight in Somalia – raises troubling questions. British security officials have had long-standing concerns about the risk of young men travelling to join the militant group, al-Shabab, and returning to pose a danger on the streets of the UK.

Earlier this month, when David Cameron hosted a conference on Somalia he said the challenges of terrorism and extremism “matter to Britain – and to the whole international community.”

So you might have expected Michael Adebolajo to have been firmly on the radar of the security services when he returned to the UK. They will now be under renewed pressure over exactly what they knew about him, and whether more could have been done to prevent the killing of Drummer Lee Rigby.

Islamist insurgent group al-Shabab is affiliated to al-Qaeda and is thought to have 7,000 to 9,000 fighters. It killed 76 people in a double bomb attack in Uganda as they watched the 2010 World Cup.