Authorities Have Released The Names Of The Three Victims In A House Explosion. 69 Year Old Carl Johnson, 55 Year Old Sandra Johnson, And Their Son, 33 Year Old Jason Johnson Were Transported To Bristol Regional Medical Center With Non-Life Threatening Injuries. The Explosion Happened Yesterday Morning At A Home On Campground Road And Is Believed To Have Been The Result Of A Propane Gas Leak. The Incident Is Being Investigated By The Washington County Sheriff’s Office And Virginia State Police. State Police Spokeswoman Corinne Geller Said ,At This Stage Of The Investigation, The Fire And Explosion Appear To Be Accidental In Nature. The Cause And Origin Of The Fire Remain Under Investigation.