While two Naga youths sustained severe injuries on different parts of their bodies, the other suffered minor injuries. One of them identified as James, a call centre employee, had his hair cut by the attackers, police said.
According to the Station House Officer of DLF Phase 1 Police Station, the James, his call centre colleague, whose name was not disclosed by police, and Aayug, an unemployed youth were living in a rented room at Sikenderpur.
The Naga youth were admitted in Gurgaon Civil Hospital where they underwent a medical examination this morning, said the SHO.
James, alias Alato, has been referred to Safdarjung Hospital in Delhi for further treatment.
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The police lodged an FIR on the basis of the medical report and the victims' statements.
The SHO said some of the culprits have been identified. and "we would soon arrest all of them."
"I will talk to the Karnataka Chief Minister. Action should be taken. No one can discriminate against anyone on the basis of caste, creed and sect," Singh told reporters in Manesar near Gurgaon.
The Home Ministry wrote to Haryana government seeking a report on the incident and the steps taken to apprehend the accused.
In a communication to Haryana government, the Home Ministry said steps should be taken immediately against the guilty and the report detailing the incident should be sent as early as possible.