Authorities say a 113-year-old building at the Masters School was damaged by a fire Monday morning.

The fire broke out in the kitchen of a third-floor apartment at Esterwood Hall, a faculty and staff residence hall. A kitchen appliance may be to blame.

The fire chief says the building was a mansion before it was divided into apartments, so finding the source of the fire was difficult.

No teachers or students were hurt, but three other apartments were damaged by water and smoke. One firefighter injured his hand trying to get past a metal security door in the building. He also suffered from exhaustion