Investigators yesterday were trying to determine what caused an early-morning, four-alarm blaze in Weymouth that forced the demolition of a 50-unit condominium complex that was only weeks away from opening.
By the time firefighters arrived at 110 Trotter Road — part of the Woodstone Crossing development — at about 3 a.m., there was heavy fire in the roof, Weymouth Fire Chief Keith Stark said, adding that the blaze appears to have started on the second or third floor of the four-story building, in which 42 units already had been sold or were under agreement.
Firefighters had to run hoses beneath the tracks at the nearby South Weymouth commuter rail station to get water to the scene, he said, and the MBTA suspended service at the station for part of the morning commute.
The building’s sprinkler system had been installed but had not yet been turned on, said Jennifer Mieth, a spokeswoman for the state fire marshal’s office, adding that the blaze was the third at a large building under construction since June, when an accidental fire broke out at the Treadmark building in Dorchester. The following month, an arson fire destroyed the Edison on the Charles development in Waltham. In all three cases, the buildings were made primarily out of wood.