The incident occurred last night when the accused, Man Singh, entered the house of the 14-year-old girl and tried to rape her, they said.
When the girl started shouting and her grandmother came to rescue her, the accused thrashed the woman and sprinkled kerosene oil on teenager before setting her on fire, a senior police officer said.
The girl was rushed to the hospital, where she died during treatment, Superintendent of Police Ashok Kumar Pandey said.
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