YAKIMA, Wash. — Investigators are trying to determine the cause of an apartment fire where a man’s body was found early Monday.

Firefighters found the body of 61-year-old Douglas Jewett after knocking down heavy flames that had engulfed his home in the Starliter Apartments in the 1300 block of Browne Avenue.

Authorities hope that an autopsy scheduled for today will reveal Jewett’s cause of death.

The fire was reported about 4 a.m. Heavy fire, heat and smoke from the second-story apartment hampered efforts to conduct an initial search for any victims, Capt. Tom Schneider of the Yakima Fire Department said in a news release.

Once firefighters knocked down the flames, they found Jewett’s body in the living room. The Yakima County Coroner’s Office will coordinate today’s autopsy.

Schneider said the cause of the fire was under investigation. Firefighters did not hear a smoke alarm sounding. But because of the severity of damage, it remains unclear whether a working detector was installed.

The fire was contained to the single apartment, although an adjacent apartment was damaged by smoke and water.

The property loss was estimated at $80,000.