The death toll in LPG gas cylinder explosion at Gambharimunda village under the Banapur police station in Khordha district rose to four with the death of two more critically-injured on Tuesday. Buddhiram Barik and Prasanna Baral succumbed to their burn injuries while undergoing treatment at AIIMS Bhubaneswar.Earlier on August 20, Kalucharan Panda and Pramod Baral had succumbed to their burn injuries. Notably, a cylinder had caught fire in the house of one Rabindra Sahoo at Gambharimunda village on August 19. When few neighbours rushed to the spot to douse the flames, the cylinder exploded leaving one from the family and six neighbours critically-injured. A day after, Chief Minister Naveen Patnaik announced ex-gratia of Rs lakh for the kin of the deceased. He also directed concerned officials to provide better treatment to those critically injured.