POLICE are trying to trace teenage yobs who hurled petrol bombs at a city centre bus full of passengers.

The teenagers threw Molotov cocktails at the single-decker bus as it stopped in Southwick, Sunderland, to let off rush-hour passengers on Wednesday.

The Stagecoach bus, travelling between Park Lane and Witherwack, came under fire when it stopped at the Shakespeare Street and Ridley Street junction.

Passengers saw a gang of youths, aged between ten and 16, throw two bottles filled with flammable liquid and burning rags at the bus.

They bounced off the side of the bus and exploded on the ground. No one was hurt and the bus was not damaged.

Police forensic experts are examining debris from the scene and officers ask anyone with information to contact them on 0191-454 7555