India, Oct. 8 -- A 24-year-old man, who allegedly stabbed his friend and a 54 year old man during a fight, was killed by the elder man's three sons in outer Delhi's Mangolpuri area, police said on Tuesday.

The incident occurred late Monday night and resulted in injuries to three people, including the deceased, Rahul Singh, who later succumbed during treatment.

According to police, the altercation began between Singh and his friend, Ritik Himanshu (24) over a work-related issue. During the argument, Himanshu slapped Singh, who then left the scene, returned with a knife, and stabbed Himanshu in the thigh and back.

Around 10.30 pm, a local, Rajender Kumar (57), intervened to save Himanshu. However, police said that Singh stabbed him too....