M4 closed after three-car crash near Cardiff

Image caption,
Some motorists have left their vehicles as traffic grinds to a halt

The M4 has been closed both ways following a three-car crash near Cardiff in which four people were hurt.

The collision happened on the eastbound carriageway between junction 32 at Coryton Interchange and junction 30 at Cardiff Gate at about 18:00 BST.

South Wales Police said one man sustained serious injuries. Three other people in the other two vehicles were also injured.

Both sides of the carriageway near the incident have been closed.

Police said the closure was "expected to be in place for some time".

The Welsh Ambulance Service said it was called just after 18:00 BST and had two crews and a rapid response car at the scene.

Trapped traffic is being sent back to junction 32 while westbound traffic is being diverted to the A48 through Cardiff.