Investigators are looking into a number of issues including the possibility that the fire was caused by smoking near an oxygen tank.

Police, fire, and EMS crews worked to rescue residents as smoke and flames spread through Gabriel House Assisted Living Facility in the heart of the city.

Video from police body cameras shows officers entering the building during the fire and assisting with the rescues of residents. (The Fall River Police Department edited this footage.)

The scene outside Gabriel House, the assisted living facility that saw a deadly fire over the weekend, was solemn Wednesday, as mourners placed flowers and lit candles, some praying, others standing silently, some imagining the scene over the weekend that left nine residents dead.

Officials announced Wednesday that the fire at the Gabriel House assisted living home in Fall River, Massachusetts that killed nine people led to an agreement to make staffing additions to the Fall River Fire Department.

The footage, released Thursday afternoon, shows Fall River police officers and firefighters alerting and rescuing residents from the assisted living facility.

New bodycam footage gives the closest look yet of the heroism of Fall River, Mass., police officers and firefighters working to evacuate the Gabriel House amid a deadly fire.

The Gabriel House assisted living facility did not perform fire drills or train workers in evacuation procedures and was also understaffed and poorly maintained, according to a current and former employee interviewed in the aftermath of the fatal fire there that killed nine residents.