New Delhi, Sept. 22 -- An 18-year-old youth who tried to intervene in the quarrel was stabbed to death in west Delhi's Naraina Village after a quarrel began over a teenager being asked to call an acquaintance "papa", police said on Tuesday.

Three members of a family, including the father and two sons, were arrested in connection with the crime.

Police identified the accused as Rajesh Kumar, 45, and his sons Aman Kumar, 22, and Anurag, 21, all residents of Naraina Village.

The incident took place at night on September 19 when two friends, Aman Kumar and Narsingh, were returning to their village from Payal Cinema on a bike. Police said they met Sumit and Aman Singh on their way and began chatting with them.

According to Police, Aman Singh...