A 15-year-old girl Missouri girl died when she was struck by a train after she and friends climbed a train trestle to jump into a creek.

Jefferson County Sheriff’s spokesman Grant Bissell says five teens were swimming in a creek Sunday afternoon near the unincorporated town of Hematite when they climbed a trestle to jump into the creek. Three of the friends heard a Union Pacific train coming and jumped into the creek, and two others tried to run.

One made it to safety but the 15-year-old was struck and killed.

The St. Louis Post-Dispatch reports Bissell said Jefferson County and Union Pacific are conducting investigations of the incident.