Three die after inhaling poisonous gas in West Bengal

Three persons died after inhaling poisonous gas while cleaning a septic tank at Baghda village in Purulia district today, police sources said.
     
First two persons entered the septic tank of a house in Bagdha village to clean it. But as they did not returned another person entered but he also did not returned, the sources said.
     
The three were then rescued and taken to Purulia Sadar hospital where they were declared brought dead, the sources said.
     
The Purulia Sadar Hospital sources said the three probably died after in inhaling some poisonous gas.