The owner of a Massachusetts assisted-living facility that was the site of a fatal fire and an inspection company have sued each other over who is at fault for failure to address a faulty sprinkler system.

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.

A Massachusetts assisted-living center where nine residents died in a fire was cited for failing to immediately report more than two dozen health and safety incidents.

Questions and finger-pointing have increased in the days since a fire at a Massachusetts assisted-living facility killed nine and hurt dozens.