Construction workers working at a house in Vallejo, California, after a deadly fire, Aug. 5, 2018.
A fire in a house in the Bay Area of San Francisco this week that the killing of a mother and her 14-year-old twin daughters began when the mother intentionally set himself on fire, police said Thursday.
Evidence at the scene and information gathered from witnesses showed that the Mau Dao, 47, commits an act of self-sacrifice, at her home in Vallejo, approximately 32 miles north of San Francisco and the Bay Area, FOX 2 reported.
Police: Vallejo mother caused fatal fire by itself in fire https://t.co/YtCkFO7n3Q
— KTVU (@KTVU) August 9, 2018
The fire, which started around 2:45 p.m. Sunday, also killed twins Trinh and Tram Tran, who were about to be high school sophomore, said the report.
A teenager died at the scene, while another teen died in a hospital and their mother died in a burn unit, FOX 2 reported.
The twins, 11-year-old sister was injured in the fire, but he managed to escape from the house. A police officer on patrol saw the girl, who told him the others were still in the house, but the fire was too intense.
The 11-year-old was expected to make a full recovery and stayed with her father, the Associated Press reported.
A worker clears debris Sunday after the deadly fire in Vallejo, California.
According to FOX 2, the twins were reminded for the share of interests in wrestling, and the band class, but had distinctive personalities.
“One had a spicy, soft voice,” friend Daniel Alencastro told the station. “And it was very sweet and caring. They would always give you a hug.”
Police on Sunday classified the fire as suspicious and began an investigation that led to the findings released Thursday.
The Associated Press contributed to this story.