A seven-year-old girl was allegedly kidnapped, raped and murdered by her cousin at a town in the neighbouring Mandsaur district.
The 18-year-old culprit, the son of the victim's paternal uncle, was subsequently arrested by the police at Malhargarh town, about 25km from Neemuch, in Mandsaur, on Tuesday.
During interrogation, he told the police that he committed the offence in an inebriated condition and then threw the victim's body in a water tank after throttling her to death on Monday.
The victim had come from Mandsaur to Malhargarh to spend time with her grandparents when the crime took place.
After the incident, angry residents gathered at the local police station and demanded that the accused be handed over to them.
The post-mortem of the girl established rape, police said, adding that that the accused would be booked under relevant sections of the Indian Penal Code.