A tow truck driver was killed after being hit by a semi truck on in Cabazon on Tuesday.

The collision happened at around 9 a.m. in westbound lanes of Interstate 10 near Haughen Lehmann Way. The on-duty tow truck driver stopped by the shoulder for unknown reasons, and was getting back in his vehicle when he was hit by the semi truck.

The tow truck driver was thrown onto the roadway and despite being helped by a passing motorist, he was pronounced dead at the scene. He has been identified as Jon Israel, 50, an employee of Stagecoach Towing.

The driver of the semi truck has been identified as Marco Rodriguez, 52. It is unclear why he hit the tow truck driver; he is believed to have allowed his vehicle to drift, but alcohol and drugs are not believed to have been factors and he has not yet been arrested or ticketed.

The collision remains under investigation.