A constable allegedly opened fire at his friend in a police quarters here after an argument over some petty issue, police said today.
The incident was reported from Jagatpuri Complex police barracks last night in which Rakesh was injured.
Rakesh and another friend had gone to constable Ranvir Tomar's place where they entered into an argument, police said.
Following which, Tomar opened fire injuring Rakesh, they said, adding the third person fled from the scene after the incident.
Rakesh was admitted to LNGP hospital for treatment.
Tomar was later arrested and a case of attempt to murder registered against him.
