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.

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

"Thank you, Detective Monteiro, for reminding us all what service with compassion truly looks like," Fall River Police wrote in a social media post.

The city is taking a significant step closer to meeting the national standard for firefighters working at a given time.

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.

First responders rescued dozens of people from inside an assisted living facility where nine people were killed.