The Boston Fire Department has released its findings on the fire that killed BU student Binland Lee on Sunday:
The fire was started by the careless disposal of smoking material.
Specifically, it started in the area of an interior staircase that was permanently blocked off on the first floor but was an open space to those using the stairs to the second floor from the rear of the house. ...
This determination was based on physical evidence, burn patterns, interviews and other factors.
Investigators are continuing their probe into the fire, not only the immediate cause, but factors that could have contributed to it. Jake Wark, spokesman for the Suffolk County District Attorney's office, says:
The death investigation already under way will go beyond cause and origin of the fire to determine any facts and circumstances that might be relevant to criminal charges.
David Bradley, an assistant district attorney who once prosecuted arson cases, is heading the DA's investigation. Boston Police detectives are also working the case.
The city this week cited the owner of the allegedly two-family house for stuffing too many people in it.