Update: A criminal investigation has been launched into the Dixon fatal fire. The CHP is investigating the fire as being related to a suspected honey oil lab.
DIXON -- Two men were killed and two others were badly injured Tuesday morning in a fire when a motor home caught fire in Dixon.
"The popping noise reminded me of the propane tanks going up leaving Paradise," neighbor Christian Marquez said.
Marquez survived the Camp Fire in Butte County, the deadliest and most destructive wildfire in California history.
As police and firefighters responded, Marquez and another neighbor tried to help get the men out of the motor home.
Dixon Fire Chief Greg Lewis said the survivors had second and third-degree burns on the arms, legs and face.
Police said say one of the survivors said his husband was still inside.
Two dogs in addition to the two men died in the fire.
Investigators have not yet determined the cause of the fire.