Four persons, including a 60-year-old man, were killed in separate incidents in the city in the past 48 hours.
The first incident was reported from southeast Delhi's Madangir where a 19-year-old man lost his life after being attacked with a knife by two members of his rival group on Sunday night. The man, identified as Subin, was a native of Kerala.
Enraged after the murder, his family members and neighbours blocked traffic on the BRT corridor in protest for almost half an hour on Monday morning.
The police arrested one of the accused, Pramod, while the another accused, Jitu, is absconding.
Subin, who ran a grocery shop in the area, was returning home when a clash broke out between the two groups. A case of murder has been registered at the Ambedkar Nagar police station.
In the second incident, a 30-year-old factory worker's throat was slit by his colleague over allegations of theft in northeast Delhi's New Usmanpur on Saturday. The deceased, Mohammad Kalam, was murdered by Mohammad Kaisar as he believed that the former had stolen from him.
"The allegation led to a heated argument that turned violent. Kalam's uncle Mohammad Iqbal tried to intervene, but could not save him and Kaisar fled from the spot," a police officer said. He has been arrested.
In the third incident, a 30-year-old man was found murdered in a local train at Shakur Basti railway station in west Delhi on Sunday night. The deceased, still to be identified, was found in a pool of blood with multiple stab wounds on his body.
The local train in which his body was found runs between Palwal in Haryana and Shakur Basti every day. The body was found by the railway staff when they were cleaning the train. Police suspect that the victim was killed for resisting a robbery attempt.
In the fourth incident, a 60-year-old man died after suffering a severe head injury while attempting to stop a fight between his son and nephew outside their home in northeast Delhi's Shahdara on Sunday evening. The deceased was identified as Rajendra Kumar.