My thoughts are with those injured in Westminster incident: Theresa May

Britain Prime Minister Theresa May has shared her concern through Twitter about the recent car incident outside Parliament.

The tweet says, ''My thoughts are with those injured in the incident in Westminster and my thanks to the emergency services for their immediate and courageous response''.

A number of people were injured when a car collided with security barriers outside London's parliament building on Tuesday and the driver was arrested, police said.

Police said 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 spokeswoman said: "We're still trying to piece it together."

Footage on social media showed a handcuffed man being led away by heavily armed police.

The crash occurred at 0637 GMT.

(With inputs from Reuters)