Pramod Kumar, who was posted in the malkhana (store room) of the police station, shot himself yesterday around 10.30 pm, said a senior police officer.
He left behind a suicide note in which he claimed personal problems as the reason behind the extreme step, the officer said.
The other police personnel present in the station rushed him to Deen Dayal Upadhyay Hospital where he succumbed to his injuries this evening, he added.
In the constable's suicide note, he said he was upset about not being able to keep his family happy.