Acid was allegedly thrown on a rape victim in Uttar Pradesh's Hapur district on Sunday, police said.
The victim and her family alleged that a relative of the accused initially pressed them for a compromise and when they refused, he attacked with acid.
They alleged that he targeted the girl's feet and escaped after the incident.
The victim has been admitted to a hospital for treatment.
Babugarh police station in-charge Uttam Singh Rathore said the minor was allegedly raped in June 2019.
Police had arrested a man, identified as Dilshad, in the case.
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