Khupmani Misall of 28 Battalion CRPF, posted at Qaimoh, was taken ill on Saturday night, the official said.
He said Misall was taken to the CRPF Unit hospital at Anantnag, where he died.
The death of the jawan angered his colleagues who allegedly thrashed their company commander for not allowing Misall to be taken to the nearest health facility, which caused delay in timely medical attention to him, the official said.
He said they have not received any complaint from the CRPF in this regard so far. Inquest proceedings have been initiated to ascertain the jawan's cause of death.
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"Once the inquiry is completed, action, as warranted under rules, will be taken," he added.
The incident comes close on the heels of Army men allegedly thrashing and injuring seven police personnel at Gund in Sonamarg and ransacking the police station also.
While the Army has downplayed the incident as a minor altercation, the state police has asked the Army to take action against the erring soldiers.