A teenage boy was killed and his girlfriend seriously injured after being hit by a train in Marysville, California.
Mateus Moore and Mickayla Friend, both 16, were on their way to a high school dance when they were struck by the Union Pacific train at around 7pm on Friday night.
According to witnesses, Mr Moore pushed his girlfriend out of the way at the last minute, before he was dragged under the train.
Ms Friend was airlifted to Sutter Roseville hospital, but her boyfriend was pronounced dead at the scene, according to authorities.
It remains unclear why the young couple did not hear the train's warning horn as it approached them from behind.