(KMZA)--A deadly Marshall County house fire has led to an investigation involving the Kansas Bureau of Investigation.

That word comes in a release from the KBI which says the agency is working with the Marshall County Sheriff’s Office, and the Office of the State Fire Marshal.

The sheriff’s office on February 7 requested the assistance of the KBI when circumstances appeared suspicious.

The fire happened on the morning of January 24, in Vermillion. Emergency crews responded to the scene, at 301 5th Street, around 7:15, following reports of an explosion and fire.

Once the fire was extinguished, crews searched the inside of the home and located the homeowner, 83-year-old Donald McLaughlin, who was pronounced dead.

An autopsy was performed and an investigation into the fire and McLaughlin’s death began.

The release states that authorities do not believe there is any threat to the public as the investigation is ongoing.