Westminster Underground station, close to Parliament, was closed after a number of people were injured when a car collided with security barriers outside London’s Parliament building, CBC reported.
The building was cordoned off and the driver was arrested, police said.
Police said none of the injuries were life-threatening and they could not immediately determine whether the incident was terrorism-related.
“The male driver of the car was detained by officers at the scene. A number of pedestrians have been injured. Officers remain at the scene. We will issue further info when we have it,” London’s police force said in a statement on Twitter.
A spokesperson said: “We’re still trying to piece it together.” Footage on social media showed a handcuffed man being led away by heavily armed police.
“Someone driving towards Parliament at speed, it wasn’t a normal, it’s not a minor like accident, it’s not like a road traffic incident,” witness Jason Williams told Sky News. “This is something in my opinion planned and very serious.”
Television images showed police pointing their guns at a vehicle which appeared to have entered a lane used for access to the Parliament building before it stopped at a security barrier.