A San Simon home where improvised explosive devices were found a week ago burned to the ground Friday afternoon.

The multi-story home in the 2000 block of Charles Lane in San Simon was found fully engulfed in flames when fire and sheriff’s officials arrived at about 2:15 p.m. Friday, Carol Capas, spokeswoman for the Cochise County Sheriff’s Office, said in a news release. The house was a total loss.

No one was at the home when firefighters arrived, Capas said.

Sheriff’s deputies, the Sierra Vista Fire Department Fire and agents from the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives, are conducting an investigation into the cause of the blaze.

A week earlier, at about 8 p.m. June 20, a security company called the sheriff’s office to report a gas alarm had gone off at the residence.

No one was at the home when deputies and crews from the San Simon Fire Department arrived.

Inside the home they found several containers of gasoline and four IEDs, Capas said.

The Arizona Department of Public Safety hazardous materials team responded along with ATF agents, Cochise sheriff’s detectives and officers from the Willcox Police Department and Hidalgo County (New Mexico) Sheriff's Office. The investigation is ongoing.

Check back with StarNet for updates.