Gamang Angu, a resident of Itanagar, was a third-year student of K D Dental College.
Angu allegedly committed suicide on Thursday by hanging himself to the ceiling fan of his hostel room, Senior Superintendent of Police Bablu Kumar said.
In the suicide note addressed to his parents, Angu said he blames himself for his death and no one else is responsible for it, Kumar said.
The police also recovered 25 cigarette packets and 40 narcotic tablets from his room, Kumar said, adding that a forensic team is investigating the matter.
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