Elderly residents – some in wheelchairs and some dependent on oxygen tanks – were blinded by deadly smoke as they tried to escape an assisted-living facility in Fall River, Massachusetts, which caught fire Sunday evening.

Assisted living centers are rare in Mass, but many families still don’t know what they offer — or what they don’t.

According to Fire Chief Jeffrey Bacon, the blaze started in a room on the second floor on the east side of the Gabriel House building, but details about the exact origin and cause are under investigation.

The city of Fall River on Thursday released six years’ worth of fire inspection reports for the Gabriel House assisted living facility, where a fire earlier this week claimed the lives of 10

The Massachusetts assisted-living facility where a fatal fire killed nine people was caring for dozens of aging residents reliant on wheelchairs and oxygen tanks, but it lacked the safety measures and most of the staffing requirements that are commonplace in nursing homes.

The Fall River mayor’s office has confirmed all Gabriel House residents displaced by the tragic Sunday fire that claimed nine lives now have new living arrangements.

A 10th victim has died as a result of injuries sustained in a devastating fire at an assisted-living facility in Fall River, Massachusetts, according to the district attorney's office.

Investigations into what starts a fire require a methodical look at the scene and can take a long time to complete.