Armed police enter a building near Tottenham Court Road in London after a woman reported that a mentally unstable man had walked into her office threatening to blow himself up. AP Photo/Kirsty Wigglesworth
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Debris litters the pavement and road in front of police vehicles below an office building were according to reports an armed man was causing a disturbance in central London. AFP Photo/Ben Stansall
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A police officer gestures to members of the public to move away from the scene where according to reports an armed man was causing a disturbance in an office building in central London. AFP Photo/Ben Stansall
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An armed police officer gets ready to take part in an operation to arrest a man reportedly armed with gas canisters at a vehicle licence office in London. AP Photo/Alastair Grant
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Police officials seal off Tottenham Court Road amid reports of an armed man causing a disturbance. AFP Photo/Daniel Sorabji
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People gather on Tottenham Court Road in central London as police seal off the street. AFP Photo/Daniel Sorabji
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Traffic builds up on Tottenham Court Road in central London as police seal off the street amid reports of an armed man causing a disturbance. AFP Photo/Daniel Sorabji
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An armed police officer runs on the Tottenham Court Road in central London. Reuters/Luke MacGregor
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Computer equipment falls from an office window (top L) in Tottenham Court Road in central London. Reuters/Luke MacGregor
