A 15-year-old girl in India was sexually assaulted and killed by her boyfriend because he suspected she was cheating on him, police said Saturday.

The minor girl disappeared last week when she went to the market with her mother. Her family searched for the girl in the nearby areas but could not find her. They filed a missing complaint with the police, saying that another youth from their village had also gone missing around the same time. The incident took place in the Indian state of Uttar Pradesh.

Police said the parents thought their daughter had eloped with her boyfriend. They registered a case under Indian Penal Code sections 366 (abduction) and (abducting a woman to compel her for marriage. On Saturday, investigators nabbed the youth after tracking his mobile phone's location. He was later taken into custody, according to the Times of India.

Police told local media that the 21-year-old man had a physical relationship with the minor girl. When he came to know that his girlfriend was in touch with somebody else, he killed her in a fit of rage. After strangulating the girl, he dumped her body in a nearby field and fled.

"The accused had dumped the body in a crop field and it was recovered and sent for an autopsy on Sunday. We have added sections 376 (rape) and 302 (murder) and relevant sections of the POCSO (Protection of Children from Sexual Offences) Act to the existing FIR as making a physical relationship with a minor is considered rape," Bareilly SSP Rohit Singh told the outlet.

In another horrific incident in the eastern Indian state of West Bengal, a 9-year-old girl was raped before being killed at a residential building. The attack led to protests by local residents alleging police negligence in the case. A senior police officer said the girl, who was not identified, was "first sexually abused and then killed."

Crime Scene
In this representational image, a policeman keeps watch near a police cordon of the crime scene in Mumbai, India, Aug. 23, 2013. Getty Images/ Indranil Mukherjee