Aadam set Hasina on fire in Dhanbad district, around 240 km from Ranchi, police said.
Aadam reached Hasina's house in the afternoon in Barari coke village and asked her to elope with him but as she refused to do so, he poured kerosene on her and set her on fire, police said.
Aadam is absconding, police said.
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