A man died in a fire early Monday morning in a multifamily home in Belmont, officials said.

Belmont Fire Chief David Frizzell said residents of the first- and second-floor apartments escaped but a man was found dead in the third-floor unit.

The victim’s name was not released.

Frizzell said there was heavy fire in the building when firefighters arrived.

Laurie Nicolas woke up when she heard the fire engines across the street. She looked out her window and saw the house across the street “lit up in flames,” she said.

When Nicolas saw neighbors standing outside, she said, she assumed that everyone had gotten out safely until she saw the firefighters break doors and smash windows as the fire kept spreading.


The firefighters tried for over an hour to extinguish the fire, Nicolas said, but thick black smoke continued to cover the house.

After Waltham and Cambridge firefighters arrived on the scene, they were able to extinguish the fire by after 5:30 a.m., Nicolas said.

State Fire Marshal Peter J. Ostroskey’s office said the cause of the fire is under investigation.

The fire took place on Trapelo Road in a residential neighborhood near Waverley Square, Beaver Brook Reservation, and Waltham.

According to town assessing records, the property is assessed at $667,000.

Map: Location of the fire

Street view: 608 Trapelo Road

Material from the Associated Press was used in this report.