The taxi driver had gone missing since this Wednesday from his residence in Sarai Nazar Ali Mohalla, they said.
The four -- identified as Mohammad Haroon, Umesh Kumar, Vinod alias Bunty and Rajesh -- were all in a car at the time of arrest.
During interrogating, the prime accused, Umesh, confessed to the crime and told police that he had a dispute with Ashu as he was having relations with his girlfriend due to which she had started neglecting him.
Umesh revealed that he had warned Ashu several times but when he did not heed, he conspired with his friends to murder him.
The main accused said he called Ashu at his shanty where they all had a drink and later took him in a car on the pretext of dropping him at his residence.
As per the confession, the four accused together stabbed Ashu to death with knives and left his body on the roadside. They concealed the blood-stained knives and seat covers under the bricks inside a pit.
Police have recovered four knives, the stained seat covers, and the car used in commission of the crime.
The accused were sent to jail, the SSP said.
(This story has not been edited by Devdiscourse staff and is auto-generated from a syndicated feed.)