Police had arrested the couple 2 days after the child's body was found. (Representational)
Uttar Pradesh police on Friday, filed a chargesheet against a woman and her boyfriend in connection with the murder of her 12-year-old sister in Muzzafarnagar last month, officials said.
The child was found dead near her house in February.
During investigation, the police found out that her sister and her boyfriend's involvement in the case. They were arrested two days after the child's body was found.
Chief Judicial Magistrate Rakesh Gautam has referred the case to the Sessions Court and asked the accused to appear on March 23 for hearing.