BROOKHAVEN, N.Y. — Police on Long Island say a woman was seriously injured when an unoccupied U.S. Army Reserve Humvee on display rolled down an incline and pinned her against a food trailer during a festival.

Suffolk County police say the Humvee came out of gear and rolled about 30 feet, striking 46-year-old Suzette Lamonica, of Brookhaven. It happened just after 5 p.m. Saturday during the Long Island Bacon Bash in Farmingville. Lamonica is being treated for arm and leg injuries at a hospital.

A man inside the trailer, 30-year-old Richard Gherardi, of East Hampton, was burned by cooking oil. He also was taken to a hospital for treatment.

Authorities say two other women suffered minor injuries and declined medical attention at the scene.

The Humvee has been impounded for a safety check.