FALL RIVER, Mass. (WJAR) — The Massachusetts fire marshal said the preliminary investigation showed that medical oxygen concentrator or smoking material in a resident's room could have started ...

Investigators believe the fatal fire at the Fall River assisted living facility started in a resident's room on the second floor from either a failed oxygen concentrator or smoking materials.

An investigation into the source of the fatal fire at a Massachusetts assisted living facility last week classified the cause as "undetermined," though officials believe it was an accident ...