VALINDA – Officials have released the name of a 73-year-old man who died in a house fire on Christmas Day.

Jim Dan Clark, 73, was pronounced dead at the scene of Sunday’s 7:55 p.m. fire at his home in the 1800 block of Aileron Avenue, Los Angeles County Department of Coroner’s Chief of Operations Craig Harvey said.

An autopsy was planned to determine Clark’s cause of death, Harvey said.

The cause of the fire remained under investigation Tuesday, Los Angeles County Fire Department Battalion Chief Ken Douglass said.

Firefighters led by LACFD Station 26 arrived to find “smoke and fire showing from a single-family residence,” Douglass said. They used “offensive” tactics to beat back the flames.

When they entered the home through the front door, they found the living room “fully involved” with fire, he said.

After extinguishing the flames, “the victim was found in the kitchen during a primary search,” the battalion chief said.

He was pronounced dead at the scene. No other injuries were reported.

The single-story house was destroyed by the blaze, according to sheriff’s officials.

The West Covina Fire Department’s Engine 4 assisted with the fire, Douglass added.

Because the fire involved a death, detectives from the Los Angeles County Sheriff’s Homicide Bureau are taking part in the investigation, authorities said.

The handling detective could not be reached for comment early Tuesday.