Berlin police say man who drove car into crowd has been detained

A man believed to have driven a car into a crowd in Berlin on Wednesday has been detained, police said on Twitter.

"A man is believed to have driven into a group of people. It is not yet known whether it was an accident or a deliberate act," police said, adding that he was being held at the scene.

A spokesperson for the German capital's fire brigade said earlier that around 30 people had been injured when a vehicle drove into a crowd of people in western Berlin.