Investigators were also awaiting results from the Fort Worth Bomb Squad, where the device was sent to find out if it was a plausible explosive device, he added.
Less than three hours after law enforcement left the scene Monday evening, firefighters were dispatched to a fire at a house two doors down, which had also been searched Monday afternoon, according to Scott.
Allen and his wife had also been staying in the other single-wide mobile home, according to neighbors. Officials said the house belonged to an out-of-state owner.
The wife reported that she was inside the house that caught fire, collecting her belongings, when she heard a loud pop near the porch area, Scott said.
By the time firefighters arrived on scene, the fire was coming through the roof, ESD No. 1 Chief Eric Vinson said.
Firefighters from Silver Creek, La Junta, Springtown, Azle, Briar and Aledo responded and fought the fire defensively because of the quick progression of the fire, according to Vinson.
The level of damage and original disrepair of the house have made it difficult to determine the cause of the fire, Scott said, adding that it is currently being ruled undetermined.
Two neighbors told the Democrat that the residents of the burned house were known to beg food, rides and the use of a shower from others living on the street.
The men said they have feared for their safety and property in recent months because of ongoing crime in the neighborhood.