London Westminster terror attack: what we know so far
Events are unfolding rapidly in Westminster after a terrorist incident outside the Houses of Parliament.
Here is what the Guardian has been able to confirm so far:
• Four people have died, including a police officer and one man believed to be the attacker, police said.
• At least 20 other people were injured in the attack, some with catastrophic wounds.
• The alleged assailant drove a car into pedestrians on Westminster Bridge before crashing it and then trying to enter the complex, armed with a knife.
• He was shot by armed police inside the security cordon of the Houses of Parliament.
• Police currently believe there was only one attacker, but have locked down the area around Westminster and are searching the area.
• Minister for counter-terrorism Tobias Ellwood was amon...