A man was shot dead by police after two members of the public were killed in an attack at London Bridge.
The Met Police, who were called to the scene just before 14:00, are treating it as a terrorist incident and say they are keeping an open mind about the motive.
Here are some pictures from the scene.
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British Transport Police said London Bridge station was closed and no trains would be stopping there
Luke Poulton / Reuters
The BBC's John McManus, at the scene, said he had seen a group of men in a fight on the bridge. Police then arrived and shots were fired, he said.
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People leave the London Bridge area
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Police advised people near the scene to follow directions from officers on the ground
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Boats from the Metropolitan Police Marine Policing Unit patrol near the scene
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Medical services at the scene of the incident
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A police officer moves an uninvolved person away from a cordon
Alexandra Carr / Twitter
Luke Poulton / Reuters
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