One Brijraj Prasad accidently fell into the well last night and was axphyxiated, the Sub-Divisional Police Officer(SDPO) Shams Afroj said.
Hearing Prasad's call for help, his kin Basudev Yadav and Kailu Yadav jumped into the well to resuce him and were also asphyxiated, he said.
The bodies have been fished out and sent for post-mortem, Afroj said.