ADDISON, Mich. (AP) _ A hospital helicopter on its way to pick up an accident victim crashed today in a field, killing two of the three people aboard, officials said.

The helicopter, based at St. Vincent Hospital in Toledo, Ohio, had been reported overdue in heavy fog.

The hospital lost contact with the Lifeflight craft at 4:02 a.m., when the pilot radioed to say he would arrive in five minutes at Addison Community Hospital to pick up an accident victim, said Bob Mackowiak, a St. Vincent spokesman.

He said the patient was taken by ambulance to a hospital in Jackson after the helicopter failed to arrive.

A doctor and nurse also were aboard the helicopter. Sheriff's Sgt. William Brackney said one survivor was found in the wreckage, in a field 15 miles west of Adrian.

Mackowiak said Lifeflight had been operating at the hospital since 1979 and had made more than 5,000 flights.