Sohan Tanti (35) strangled his two minor children Bharti Kumari (10) and Aman Kumar (5) while they were asleep late last night and later hanged himself in Simaria village, they said.
According to the police, a suicide note was recovered in which Sohan has accused his wife Putul Devi for abandoning her family to stay with her brother in-law Patan Tanti, with whom she allegedly had an extra marital affair, in a nearby Panchrukhi village.
The bodies have been sent for post-mortem, sources said, adding an investigation was on in the matter.