Michael Adebolajo, one of the suspected attackers in the Woolwich murder, was arrested in Kenya in 2010, where he was suspected of preparing to join terrorist group al-Shabab.
Britain's Foreign Office said Sunday that Adebolajo was taken into custody with five others attempting to join the Al Qaeda-linked group and deported.
Kenya's government had initially denied that Adebolajo had visited the country, but said Sunday that he was arrested there under another name, which caused the confusion, BBC News reported.
"Kenya’s government arrested Michael Olemendis Ndemolajo. We handed him to British security agents in Kenya and he seems to have found his way to London and mutated to Michael Adebolajo," spokesman Muthui Kariuki said.
"The Kenyan government cannot be held responsible for what happened to him after we handed him to British authorities."
Adebolajo, 28, is the attacker who says "you people will never be safe" in a video taken by passersby immediately after the murder. He was also arrested after violent protests in London in 2007.
He and second suspect Michael Adebowale, 22, are currently at separate London hospitals under armed guard. They were shot by police at the scene after attacking British solider Lee Rigby with knives.
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