Police probe 'terrorist' car attack outside UK parliament

Police forensics officers work around a silver Ford Fiesta car that was driven into a barrier at the Houses of Parliament in London.

A car swerved into passers-by then slammed into a barrier protecting Britain's Houses of Parliament in a suspected terror attack on Tuesday.

A 29-year-old British man, not previously known to the security services, was arrested at the scene by armed officers. Three people were injured.