Westminster attack: Everything we know suspect Salih Khater and the London terror attack
A car has crashed into pedestrians and been swarmed by police after an incident right outside London's Houses of Parliament.
Videos show the car smashing through Parliament Square in Westminster, and armed police arriving at the scene within seconds and apprehending a suspect.
Much still remains unclear about the incident, including the identities of anyone involved. But more is expected to become known as the hours and days go on.
As with all breaking news incidents, information is scarce and what information is there is is often unclear. But we will be seeking to round up everything we know for certain about the day's events – and everything we are still yet to find out.
