About 11 pm North Montgomery County Fire Department responded to a reported large building structure fire on Oliver at Main in the Security Community of SH 105. As units responded another call came in that there was a male on fire. Units arrived with heavy fire on a garage type structure. Fire crews were able to quickly set up a water supply from the lake behind the property. This is the same lake they found the man who was reported on fire. Evidently, he went to the lake to extinguish himself. He suffered second and third-degree burns to over 40% of his body. PHI Air Medical was requested to the scene and flew the victim in critical condition to John Sealey Hospital in Galveston. The Montgomery County Fire Marshal is investigating.