Authorities say a small plane crash on an interstate in Michigan's Upper Peninsula has killed the pilot and three others.

Mackinac County Sheriff officials say a 13-year-old boy who was "ejected" from the plane remains hospitalized and that he was the only survivor of the crash that happened about 5 p.m. Tuesday.

Police say the twin engine Beachcraft Model 58 that is registered out of state was airborne less than 1,000 feet before encountering trouble after taking off from Mackinac County Airport. The plane flipped after striking a median barrier on I-75.

Police have not identified the victims pending notification of family.

No other injuries were reported.

The Federal Aviation Administration and the National Transportation Safety Board will investigate.