Alapuzha: A house boat was completely gutted in a fire at Chembanthara at Aryad in Alapuzha district on Sunday morning. No casualities were reported in the incident. A short circuit in the inverter was the cause of fire. Following the fire, the gas cylinder in the house boat also exploded. The incident happened at about 6 am. A major mishap was averted as the guests and tourists in the boat were evacuated.