A man in Jharkhand killed himself on Monday after earlier murdering his wife, two sons and sister-in-law with whom he was in love, police said.
Om Prakash jumped before a train near a railway station in Dhanbad, a police official said.
The bodies of the four were found on Sunday night from his house at Baroa locality in Dhanbad.
According to the police, Om Prakash first killed, three days ago, his sons Piyush Kumar (12) and Harshit Kumar (8) and wife Suman Devi (32).
On Sunday, he killed Nitu, his sister-in-law. He was opposed to her impending marriage.
The murders came to notice when Suman Devi’s brother arrived at his house on Sunday night. Om Prakash fled on seeing his brother-in-law.