SALT LAKE CITY — Firefighters responded to a structure fire at an abandoned house on Friday, the second time they've been called to a fire on the property in the past year and a half.

About 11 a.m., several people called 911 reporting a fire at 1250 S. 900 West. When crews arrived a short time later, the house was already fully involved, said Salt Lake fire spokesman Jasen Asay.

Firefighters went into a defensive mode, fearing the structure would collapse on them if they went inside, he said.

The house has been vacant for an extended period of time, though Asay did not know exactly how long. A chain-link fence surrounds the property, some of the windows are boarded up and there was a notice on the property informing others that it was vacant, he said. All utilities had also been shut off to the house for some time.

Firefighters also responded to the property about 18 months ago when a detached garage behind the house caught fire, Asay said. The house was also vacant at that time.

The cause of Friday's fire was still being investigated. Asay said he didn't know if possible squatters may have started the fire, but it was one of several possibilities being looked at.

— Pat Reavy