Police said the accused had thrown a piece of paper at the victim which said, "Justice has been served by killing you."
The motive of the killing is still under investigation.
Vikas was shot dead last night by four to five men who were in a silver-coloured sedan. Around 12 bullets were fired at Vikas, the police said.
The accused had earlier attacked one Hemant in Gurugram around three-four weeks back.
Hemant who is currently in hospital, is friends with Vikas and it is suspected that the accused might have nursed a grudge against Vikas.
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