A terror suspect who evaded surveillance by changing into a burka at a mosque is being hunted by police.
Mohammed Ahmed Mohamed, 27, was seen on Friday at the An-Noor Masjid and Community Centre in Acton, west London.
CCTV images issued by police showed him leaving with his face totally covered. He has not been seen since.
Police warned the public not to approach Mr Mohamed, while shadow home secretary Yvette Cooper called for answers on how he was able to abscond.'Covered face'
Mr Mohamed, who police say has breached his terrorism prevention and investigation measures notice, is 5ft 8in tall, of medium build and is of Somali origin.
Mr Mohamed arrived at the mosque in Church Road, Acton, wearing Western-style clothing at approximately 10:00 GMT on Friday, and was seen inside at 15:15 GMT.
CCTV images issued by Scotland Yard showed the suspect wearing a burka after leaving the mosque, with his face totally covered.
The Metropolitan Police said he was not considered to be a direct threat to the public, but advised anyone who saw him not to approach him and to call 999.
A Scotland Yard spokesman said: "The Counter Terrorism Command immediately launched inquiries to trace Mr Mohamed and these continue.
"Ports and borders were notified with his photograph and details circulated nationally. Public safety remains our priority."
A court-imposed anonymity order banning the publication of Mr Mohamed's name was lifted on Saturday to allow police to make a public appeal for information.
Terrorism prevention and investigation measures notices - or TPims - were introduced in January 2012 to replace control orders. They restrict the subject's movements and activities.
Ms Cooper described the situation as "extremely serious".
"Clearly police and security agencies will be doing everything possible to locate this terror suspect and ensure public safety," she said.
"The home secretary also needs to provide information about the decisions made over Mohammed Ahmed Mohamed's TPim, how he was able to abscond and what the risks to the public are.
"Given the longstanding concerns about the replacement of control orders, the limitations of TPims, and the pressures on monitoring and surveillance, the home secretary needs to provide rapid information about the extent and adequacy of the restrictions on Mohammed Ahmed Mohamed and ask the independent reviewer David Anderson to investigate urgently what has happened and the adequacy of the controls and powers in this case."
The Home Office has not commented.