A motorist has described how he looked over to see his wife "covered in blood" after a bucket-sized piece of concrete was dropped on to their vehicle from a bridge.

Steve and Carol Manley were driving home after visiting some friends when the missile was launched from a bridge on the A12, leaving Mrs Manley with fractures to her face and ribs, and internal injuries.

"There was a bump on the roof of the car, as far as I could tell," her husband said.

"I thought I had hit something in the road. When I turned around and looked at my wife to ask her what it was, I noticed that the front of the car was destroyed.

"My wife was covered in blood. There was a concrete block on her chest and leg."

Mr Manley said his 57-year-old wife had only recently left hospital following an operation on her stomach, where the concrete block landed.

Police are treating the offence as attempted murder. Anyone who can help is urged to call police on 101.