While people were asleep in their beds, a fire broke out at an adult foster host home which serves people with mental and physical disabilities killing three and injuring four others.

"They needed a lot of assistance getting in and out of busses and all that," Patti Suman, neighbor, said. "I don't know if they would've had a chance to get out on their own."

According to Arvada Fire, seven people were inside at the time of the fire.

"As with any fire scene when we arrive, our first objective is to make sure that everybody has been evacuated," Deanna Harrington, Arvada Fire Protection's Deputy Fire Marshal, said. "We do a search and so they were able to evacuate those that hadn't yet."

Neighbor Betty Rodriguez says the residents were not very mobile.

"Some of them can hardly walk," Rodriguez said. "They put a bunch of them in a wheelchair."

According to Arvada Fire radio traffic captured on Broadcastify, it sounds like six of the seven people inside had to be rescued.

"I'm helping two people from the basement exit the structure. I think we're gonna have one that's gonna be trapped," a firefighter said on the radio traffic.

The fire was reported around 1:30 a.m. in the 6100 block of Robb Street, right across the street from Arvada West High School.

Neighbor David Pennington says 3 or 4 people with disabilities lived at the home, along with the homeowner and a child.

"I feel bad for them you, you know? It's an unfortunate event," Pennington said.

The exact cause of the fire is still under investigation. Arvada Police performed a 3D scan of the entire home to get a detailed look at the scene. The identities of the victims have not been released.

"I don't know if there's any words that you can put with that can describe how painful it must be for the families," Suman said. "I'm just really sorry for the families."

Late Saturday night, the agency responsible for the foster host home released a statement. Scott Parker, executive director of Parker Personal Care Homes sent this press release:

Parker Personal Care Homes, Inc. and our entire staff send our deepest and sincerest condolences to the family and friends of those affected by the tragedy that occurred in one of our adult foster homes/host homes in Arvada this morning.

The safety and well-being of our residents is our top priority, and we are working diligently with fire personnel and other officials to thoroughly investigate this incident.

We would also like to send out a heart-felt thanks to the Arvada Fire Protection District, the City of Arvada Police Department, the American Red Cross, friends and neighbors, and all medical professionals who have assisted us throughout this tragedy.