MARION, Ohio (WTVN) --A fire that heavily damaged three homes in Marion early Tuesday is being called suspicious.

A fire department spokesman says it's believed the fire on West Columbia St. began on the porch of the middle home, but an exact cause hasn't been determined yet.

At least 11 people lived in the three homes.

There were no serious injuries.

The Marion Star reports that some family members mentioned a fight Monday night and threats about arson.