Last updated at 10:40 AM on 29th February 2012
The widow of one of the July 7 bombers is being sought for questioning by Kenyan authorities about a suspected terror plot.
They are hunting a female suspect who escaped when police swooped on part of a cell planning a terror attack in the coastal city of Mombasa over Christmas.
Anti-terrorist officers in Nairobi are investigating the possibility that Samantha Lewthwaite, 28, may have been part of the cell.
She was married to Jermaine Lindsay who killed 26 of the 52 people killed in 2005 when he detonated a bomb on a tube train at Kings Cross.
Last night Kenyan police said the suspect had been using a number of identities, one of which could be that of the British Muslim convert Miss Lewthwaite.
They say they cannot confirm the woman they are searching for is Miss Lewthwaite until she is captured.
It is possible her identity could have been stolen by the suspect being hunted.
Erick Kiraithe, a Kenyan police spokesman, told the Times: ‘We know quite a bit about her now.
‘She has had three identities in the past and that [Samantha Lewthwaite] is one possible identity.’
Police were close to capturing their suspect earlier this year, but she managed to flee the gang’s hideout before officers arrived.
She had been carrying a British passport bearing the name Natalie Faye Webb, a woman apparently born in South Africa. But it was later established the passport was a fake.