Officials say they believe the cause of the horrendous prison fire that killed 359 inmates in a Honduras prison to be a dropped cigarette. Chief prosecutor Luis Alberto Rubi said that autopsies performed on 277 inmates showed no evidence of gunshot wounds while also ruling out the theory that gasoline helped ignite the fire. An inmate reportedly fell asleep while smoking a cigarette, dropping it on his mattress. Officials from the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives were said to have confirmed the cigarette theory. The Feb. 14 fire was the world’s deadliest in a jail in a century.