A fire investigator looks for clues in the area of a window on the second floor of a six-unit apartment building at 68 High Street Monday morning in Auburn.

A fire investigator tosses debris Monday morning from a second-story window of an apartment building at 68 High St. in Auburn. A team from state and local agencies investigated the cause.

Auburn police officials were on hand waiting for the fire investigation to be complete at 68 High Street Monday morning.