COLUMBIA, Mo. - UPDATE, 5:15 p.m.: The home is a total loss and the cause is not determined. Assistant Chief Gale Blomenkamp said the fire was very advanced when crews arrived.
"With that much damage it's hard to determine an actual cause to the fire," Blomenkamp said.
Investigators looked at the home again. Based on the amount of damage, investigators believe the fire originated near the basement in the center of the home.
"Neighborhood people said they smelled smoke all day so based on the amount of fire we had when we got here we knew this fire was well advanced," Blomenkamp said.
He said the fire could have burned for six to ten hours before crews were called. Blomenkamp said fortunately no one was injured and no pets were lost.
UPDATE, 1:12 a.m.: The roof and first floor of a Boone County home collapsed in a house fire, according to firefighters on scene.
Assistant Chief Gale Blomenkamp said the extensive damage to the house made it difficult for firefighters to investigate the cause of the fire on Friday night. Investigators will be back on scene Saturday morning to try and find it.
"The issue that we have is that we cannot get inside there," Blomenkamp said. "The main floor is burned away, the roof is collapsed, and there's just really no good access for us. No need to put anyone in there at this point."
A neighbor called emergency services when the fire started, Blomenkamp said. The female resident and her two children were not home at the time, but arrived on scene later. Crews found the woman's dog, Boss, in the backyard unharmed.
UPDATE 10:33 p.m.-
Family members of the homeowner tell our crews no one was hurt in the fire.
A dog was in the backyard, but it survived.
Firefighters are investigating the cause of the fire.
Flames are no longer visible from the front of the house.
Several Boone County firefighters are going in and out of the house and the garage.
Boone County Fire Protection District is responding to a house fire in the 2100 block of Alamos Place east of Columbia.
The house was fully involved when authorities arrived.
The call was made before 10 p.m. Friday night.