A state police fire marshal has ruled a fire at a Schuylkill County residence as undetermined.

A fire occurred at 12:55 p.m. Saturday at 89 Park Place Road, in Mahanoy Township.Firefighters from Mahanoy City and Delano Township responded.Trooper Joseph W. Hall was asked to determine the cause of the blaze.Hall said his investigation has not determined a cause. He was assisted in the investigation by Trooper Janssen Herb.