The attack started when a car was driven over Westminster Bridge hitting and injuring a number of members of the public, also including three police officers on their way back from a accomodation ceremony. The car then crashed near to Parliament and at least one man, armed with a knife continued the attack and tried to enter Parliament.
Sadly I can confirm, that now four people have died, that includes the police officer who was protecting Parliament, and one man we believe to be the attacker. He was shot by police firearms officer, at least 20 people have been injured. As part of long established and well rehearsed plans Parliament has been locked down.
And the met responded in line with our plans for a marauding terrorist attack. We now of course have an ongoing operation. And whilst we currently believe there was only one attacker, I'm sure the public will understand us taking every precaution in locking down and searching the area as thoroughly and exhaustively as possible.