Nigerian Umar Farouk Abdulmutallab (right) poses with fellow pupils from a British international school in Togo, while on a school trip to London in 2001. Eight years later, on 24 December 2009, he allegedly tried to blow up an airliner over Detroit.
The Sanaa Institute for the Arabic Language, in the Yemeni capital, where Mr Abdulmutallab was a student. Yemeni officials confirmed the 23-year-old was in the country from August until the beginning of December 2009.
The Murtala Muhammed International Airport in Lagos, where Mr Abdulmutallab began his journey to Detroit, via Amsterdam.
An employee of Schiphol Airport, Amsterdam, stands inside a body scanner for a media demonstration. Mr Abdulmutallab passed through the airport, but the machines were not used on US-bound flights because of privacy worries.
An official handout image said to show Mr Abdulmutallab's charred underpants and an explosive packet. He is accused of trying to detonate a device as Northwest Airlines Flight 253 prepared to land at Detroit.
The remains of explosives allegedly found on Mr Abdulmutallab's body.
Dutch film-maker Jasper Schuringa was among those on board the flight who helped to overpower Mr Abdulmutallab.
Mr Abdulmutallab in a photograph released by the US Marshals Service after his arrest.
The Federal Correctional Institution in Milan, Michigan, where Mr Abdulmutallab is being held.
Passengers queue to check in at Detroit Metropolitan Airport. Many flyers who fail to arrive early enough are missing their flights due to long lines and raised security, following the alleged Christmas Day bomb plot.
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