Overview

• The Saturday night fire at 43 Trident Avenue fully engulfed the 150-year-old, two-and-a-half-story wood-frame home, causing a pancake collapse and total loss that displaced the homeowner.
• Winthrop Fire Department, undermanned at the onset, summoned mutual aid from Chelsea, Revere, Everett, Boston and Massport to bolster suppression efforts.
• Initial concerns of a trapped occupant were eased when the homeowner was found safe at a Red Sox game during a rapid on-scene search.
• No residents were injured and two firefighters received treatment for heat exhaustion before returning to duty.
• Nearby houses suffered melted siding and a damaged vehicle, and investigators from Winthrop and the state fire marshal’s office are tracing the blaze’s origin to the front left first-floor unit.