Authorities in Montana are investigating a double fatality train vs. truck crash that occurred on Sunday.

The incident occurred around 9 p.m. on June 27 east of Livingston, Montana, near the 350 mile marker on I-90.

The Montana Highway Patrol said that the truck driver did not stop at a stop sign before attempting to cross the railroad tracks, ABC Fox Montana reports.

An oncoming train struck the tractor on the driver’s side near the back.

The train stopped several hundred yards from the crash site and the tractor unit caught fire, which in turn sparked grassfires.

Montana troopers say both the 23 year old driver and one other person in the truck had passed away by the time authorities arrived on scene. The passenger is believed to have been the co-driver and both were from out of state.

No injuries were reported on the train.

The crash remains under investigation.