The gangster, identified as one Raj Bahadur, along with another gangster Karan Gujjar, had fired a shot late last night on Krishan Kumar, who runs a liquor enclosure at Azad Chowk and is a resident of Mohalla Khasapura in Rewari, area SHO said.
While Krishan was subsequently admitted to a private hospital at Gurgaon, a case under attempt to murder and the Arms Act has been registered against the duo.
Raj is being interrogated by the police, the SHO said.