Authorities are investigating what started a deadly fire in Skagit County Saturday morning. While officials have yet to confirm deaths or injuries, a sheriff's spokesperson said "not all persons...are accounted for."

Five people, including a mother and children, were reportedly inside a home in the 13000 block of Bayview Road when the fire broke out early Saturday morning.

When firefighters arrived, a house was fully engulfed in flames.

“We could see the glow as we stepped out the door,” said Doug Peterson, a man who lives two doors down. “The whole front of the house was engulfed in flames – just total flames – as high as the roof and beyond. I just knew looking at it right then. This is not a survivable fire.”

Firefighters from several departments battled the blaze until dawn.

The neighbor, who also happens to be a volunteer firefighter and EMT for Bayview Fire Department, got a page at 2:30 Saturday morning telling him his neighbor’s home was on fire. Peterson said he met the owners briefly when they moved into the house in the spring.

Several occupants of the home were transported to hospitals for medical treatment, according to a press release from Skagit County Sheriff’s Office.

A mom and children may have been trapped in the burning building, according to scanner recordings with dispatchers saying “a mother and children trapped on the second floor.”

Deputies said Saturday evening a woman was taken to Harborview Medical Center in Seattle; however, there is no word yet on any children. Skagit County Sheriff’s Office spokesperson Tom Molitor said in a statement “not all persons believed to have been in the residence at the time of the fire are accounted for.”

“It’s just a sad, sad situation. They’re never easy, but I trust right now they’re with god. They’re happy children. They’re in a better place,” Peterson said.

Officials closed roads near the home to traffic for more than 14 hours.

Fire investigators were expected to return back to the scene Sunday morning. The Bureau of Alcohol, Tobacco and Firearms has also joined the investigation.