MONROE TOWNSHIP, Mich. (AP) — Michigan State Police say two children suffered critical injuries and two other people also were hurt Thursday when a freight train struck a pickup truck Thursday at a crossing in Monroe Township.

An adult was driving the truck with three child passengers when the crash occurred about 7:20 a.m., police said.

READ MORE: Meet These Two Bear Cubs Who Have Become Inseparable At The Detroit Zoo

The truck was struck by a CSX train while crossing the tracks on a private drive, police said.

Firefighters and police extracted the occupants of the truck, and they were transported to a hospital in Toledo, Ohio, authorities said.

READ MORE: Delta Wants Other Airlines To Share ‘No-Fly’ Lists To Help Stop Unruly Passengers

Two children were in critical condition, police said. The other child was in serious condition but stable, police said. The driver also was stable.

Nobody aboard the train was injured.

The cause of the crash was unclear. CSX was assisting state troopers with the investigation.

MORE NEWS: Veteran Needs Help With Home Repairs

© 2019 Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.