The misery for the force did not stop here as the accused constable, Chandra Shekar, ran away with an assault rifle and 70 rounds of bullets from Lal Bahadur Shastri National Academy of Administration.
The Indo-Tibetan Border Police (ITBP) force guards the premier institute located on this hill station in Uttarakhand.
The story of the gory incident is said to have begun yesterday when Sub Inspector Surendra sentenced Shekar for a day's punishment over disciplinary issue.
ITBP Director General Krishna Chaudhary told PTI that he has ordered a court of inquiry into the incident and directed for the "immediate" replacement of the unit from the task.
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Officials said the incident was reported around evening when it is suspected that an altercation broke out between the two men and subsequently Shekhar grabbed an LMG and pumped at least three bullets into the SI and also shot at few others standing nearby.
Senior ITBP commanders of the force and those from local police and administration rushed from state capital Dehradun to the Academy.
Officials said a search has been launched to nab the accused who joined the force in 2012.
The (LBSNAA) was established here in 1959. ITBP has close to 80 troops drawn from their 34th battalion posted here.