A 60-year-old inmate, serving life imprisonment at a district jail, died under mysterious circumstances during treatment at a hospital here, police said Sunday.
The actual cause of death will be ascertained in the post mortem, they said.
"Yusuf, who was serving life imprisonment, was hospitalised at the district hospital on Friday late night when his condition started deteriorating.
"He died during treatment at the hospital on Saturday. Once the post-mortem report is out, only then the actual cause of death can be ascertained," In-charge Superintendent, Bahraich District Jail, V K Shukla, said.
In 2014, a court in Lakhimpur Khiri had sentenced Yusuf to life imprisonment after he killed two persons to avenge the death of his two brothers. He was a resident of Uttar Pradesh's Lakhimpur Khiri district.
Shahid Ali, Yusuf's brother-in-law, told reporters that Yusuf was in fine health and alleged that he was killed in the jail.
"Initial medical reports state that the inmate died due to heart attack. The exact reasons for death will be ascertained once the post-mortem report is out," the official said.
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