A person was hit and killed by a train Tuesday night in Tucson just south of Marana, west of the I-10, according to Union Pacific.
The company says it happened around 8:15 p.m. near the I-10 Frontage Road and West Sunset Road.
Officials say a person was on the tracks when they were struck.
Union Pacific officials say the incident did not happen at a railroad crossing. The train crew was not hurt, but the person on the tracks died at the scene.
The Tucson Police Department is investigating, the company said.