An enraged army trooper shot dead four of his colleagues inside a heavily-guarded camp near Panzgam village in south Kashmir's Anantnag district early Thursday morning.
"Those killed include a junior commissioned officer (JCO) and three jawans," a senior police officer said.
The trooper was overpowered by other soldiers who rushed to the spot inside the camp.
The shooting incident triggered panic inside the camp.
Senior army officers have rushed to the spot, according to sources.
Incidents of fratricidal shootouts and suicides have taken place among the security forces doing counter insurgency duties in Kashmir for the past 20 years.
Officials attribute such incidents to continuous assignments in hostile areas, long separation from their families and lack of recreational avenues among the security forces.