Four people were killed in a plane crash in rural northwest Ohio, the Ottawa County Sheriff's Department said Saturday. The plane crashed just before 1 p.m., Deputy Jennifer Mansor said.

The crew of the twin-engine Cessna 340 announced their intention to land at the Erie-Ottawa Regional Airport over the radio about noon, airport director Jack Stables said. He did not know where the flight originated. The two men and two women on board were killed, the State Highway Patrol said.

Stables said he watched the plane fly across a field near the airport to begin the landing pattern with no indication of distress.

"Everything seemed normal and I could hear both engines working fine," Stables said. "Then we never heard from them again."

The plane crashed in a rural residential area about 200 or 300 feet from a house, Stables said. The aircraft's landing gear and flaps were down, seemingly in preparation to land. No injuries were reported to people on the ground.

A Cessna 340 can seat six passengers but typically carries just four because of weight restrictions, Stables said. The sheriff's department did not know how many people were on board the plane.

The Ottawa County Sheriff's Department, the Fremont post of the patrol and other agencies were responding to the crash scene.

Further details were not immediately available.