At least 33 people have been killed and several others injured in central Kenya after a bus veered off a bridge and plunged into a river. The authorities say that 10 people survived the Sunday night accident.

The vehicle was travelling from the town of Meru to the coastal city of Mombasa when the accident happened. Police say preliminary investigations suggest the brakes may have failed.

A search and rescue operation is underway and the death toll is expected to rise.