Updated

Police say four people have been found dead in a home in rural Michigan.

St. Clair County Sheriff Tim Donnellon told the Times Herald of Port Huron that a husband, wife and two teenage sons were found Sunday night at a house in Columbus Township, about 40 miles northeast of Detroit.

Additional information including cause of death wasn't immediately released. Autopsies were scheduled for later Monday.

Sheriff's office spokesman Steve Campau said Monday the investigation is continuing.

Donnellon said the teenagers were stepbrothers from the adults' previous marriages.