HOWARD CITY, Neb. (AP) — Authorities say five people have been injured in an accident at a tractor pull near Grand Island.

The incident happened Sunday afternoon in Howard City, leaving four men and woman injured. Two of them were critically injured.

According to a press release from Howard County Sheriff Tom Busch, a tractor and sled collided with event staff, participants and multiple vehicles.

The victims were transported to CHI Health St. Francis in Grand Island. The cause of the accident is under investigation.