The incident took place last night when Rajesh attacked Chandan with some sharp-edged weapon, leading to his death on the spot, said Amit Choudhary, station in-charge, Noida Phase 2.
Last month, Rajesh had a verbal duel with the victim, after the former found him in a compromising position with his wife, Choudhary said.
A case has been lodged against the accused, who is at large, he added.