The cause of a fire at a Massachusetts assisted-living facility that left 10 people dead remains undetermined for now as officials investigate whether smoking materials and an issue with a medical oxygen machine may have been factors,

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 accidental ignition

The deadly fire at an assisted-living facility in Fall River, Massachusetts, was accidental, but the cause is classified as undetermined.

Ten people have died after a Massachusetts assisted living facility caught fire Sunday night, making elderly residents rush to their windows to scream and beg for help as smoke filled the hallways.

The person who lived in the room where the fire began is among the 10 people killed, according to the state fire marshal

A survivor of the deadly fire at the Gabriel House assisted living home in Fall, River Massachusetts is now suing the owner.

Smoking or an oxygen machine issue may have sparked the deadly fire at Gabriel House Assisted Living Facility in Fall River, Massachusetts.

Investigators say a fire that killed 10 people at a Massachusetts assisted-living facility was likely caused by smoking or an oxygen machine's electrical problem.

New information is expected be revealed as to what caused the deadly fire​ at the Gabriel House assisted living home in Fall River, Massachusetts.

A new initiative focused on assisted living providers is launching today in Massachusetts in response to a fire that resulted in 10 deaths.