A 30-year old IPS officer, who had reportedly consumed some poisonous substance, died Sunday at a nursing home in Kanpur after battling for life for four days.
Surendra Kumar Das, an officer of the 2014 batch, was posted as Superintendent of Police (East) in the city.
A "suicide" note recovered from the scene of the incident mentioned "family issues" as the reason behind the extreme step.
Dr Rajesh Agarwal, a senior doctor, at the nursing home where Das was undergoing treatment, had on Saturday said that many organs of the officer's body had stopped functioning.
He was on life support in the intensive care unit.
"He died during treatment Sunday", said an official spokesman, adding Chief Minister Yogi Adityanath has expressed deep condolence to the family members of the young IPS officer.
Das had spoken to circle officers on Tuesday night about patrolling.
A police official said: "The (suicide) letter stated that he was doing so (taking his life) because of family issues. The letter was addressed to his wife and further stated that he loved her a lot. At the end of the letter, it stated that no one else was responsible for it."