Four dead, at least 20 injured in UK parliament 'terrorist' attack

Four people were killed and at least 20 injured in London on Wednesday after a car plowed into pedestrians and an attacker stabbed a policeman close to the British parliament, in what police called a terrorist incident.

The dead included the assailant and the policeman he stabbed, while the other two victims were among the pedestrians hit by the car as it tore along Westminster Bridge, which is right next to parliament.  Read more.