Additional Deputy Commissioner of Police Sanjeev Sharma said Ankit, 24, Paras, 20, Dev Chopra, 28 were arrested on Tuesday while another, Karan, 19, was held on Sunday for their involvement in the crime that took place last Friday in Dwarka's Uttam Nagar.
Vijender Rana, 40, was killed and his brother Rajesh, 45, was injured after they were attacked by the four.
The knife used by the accused was recovered from Chopra, police said.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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