The Arizona Department of Public Safety (AZDPS) is looking into a crash which took the life of someone Sunday afternoon.

An AZDPS spokesperson tells KGUN 9 it happened just after 2 p.m. on Interstate 10 near milepost 269. Apparently, a pickup truck was heading east when it went over the medium.

AZDPS investigators don’t currently know why or what led the driver to cross the medium. All the spokesperson can confirm is this caused the pickup truck to crash head on into a westbound semi-truck.

According to the AZDPS, one of the pickup truck’s passengers was pronounced dead at the scene.