In US, at least 13 people have been killed in southern California after a tour bus collided with a lorry, media reports say. At least 31 people injured, some are in critical condition. The crash happened on Interstate 10 close to the resort town of Palm Springs on yesterday morning. <br/><br/>It is not yet known why the two vehicles collided. The bus was bound for Los Angeles. Rescuers used ladders to climb into the bus windows to remove bodies. The west-bound lanes of the interstate were closed near the crash site.