The cause of a deadly fire​ at the Gabriel House assisted living home in Fall River, Massachusetts has been narrowed to two possibilities.

Staffing ratios, the affordability of care, and safety regulations are all being reconsidered in the wake of the Fall River blaze.

The exact cause of the fire at the Gabriel House assisted living facility in Fall River may never be known, but investigators have narrowed the cause down to two possibilities, officials announced Tuesday afternoon.

Following a meeting with Fall River officials, Healey said the state was releasing $1.2 million for more emergency response personnel.

Investigators may never know for certain what sparked the fire on the left side of the U-shaped assisted living facility.

State and city leaders will gather on Tuesday to discuss the deadly fire at Gabriel House in Fall River that claimed the lives of 10 people.

Rescuing residents of Gabriel House was difficult because of window AC units — often a violation of building code that's difficult to enforce.

The district attorney's office said it would provide preliminary findings of the investigation into the deadly blaze.