A missing 11-year-old girl's body was found stuffed in a sack in northeast Delhi's New Usmanpur area, on 5 October.
The girl, a resident of Gautampuri in the area, had gone to buy household items on the afternoon of 4 October but did not return from the trip and on 5 October her body was found, metres away from her house, police said.
Her body was found at around 7am by a ragpicker who saw the sack lying in one of the lanes of Gautampuri area and opened it thinking it might contain garbage.
He raised an alarm when he saw the girl's body and police were informed soon after, a senior police official said.
The deceased was a student of class V in an MCD school in the area and had returned home early on 4 October since she was not feeling well.
Around noon, her mother had sent her to buy an adhesive but the girl did not return for a long time, following which the mother then informed her husband, an autorickshaw driver, and their relatives.
They approached the police and a case was registered. The girl's family alleged that she was sexually assaulted before being killed, as there were injury marks on the body.
"A case of murder has been registered and we are awaiting post-mortem report to find out whether she was sexually assaulted," Deputy Commissioner of Police (North East) Ajit Kumar Singla said.
Police are suspecting the involvement of someone known to the victim's family since there was no ransom call or threat call received by the family.
"The girl's family has expressed suspicion on a relative who had enmity with their over some property and could have plotted the kidnapping. The person will be called for questioning," said a senior police officer.