Four boys aged between 12 and 14 have been arrested on suspicion of rape.
The suspects, who are aged 12, 13, and two 14 year-olds, are in police custody arrested on suspicion of the offence in a car park of Morrisons in Rochdale.
Their arrests came after officers were called at about 6pm on Saturday to reports of a rape on Kingsway, in Newbold, Greater Manchester Police said.
Pictures from the scene showed a police forensic tent erected in the car park and and an increased police presence in the area.
The victim is currently being supported by specialist officers.
A crime scene remains in place as officers continue their investigation, the force added.
The incident has left people who lived near the supermarket in shock, reports Manchester Evening News.
Lynn Davies, who lives by the cordon, told the publication: “I knew something had happened.
“The police came last night knocking on to ask if we had seen anything.
“It makes my skin crawl.
“It’s bad enough when it’s an adult, but children?”
John Hogkinson, 80, who also lives directly next to the crime scene, said: “The police came but we didn’t hear anything.
“We were shocked because it’s so quiet around here.
“I’ve lived here for 17 years and I’ve never heard of anything like this. It’s awful.”
A spokesman for Greater Manchester Police told Machester Evening News: “At around 6pm on Saturday 10 February 2024, officers were called to reports of a rape in Newbold, Rochdale.
“Four boys aged 12, 13, 14, 14 have been arrested on suspicion of rape and remain in police custody.
The victim is currently being supported by specialist officers.
“A scene remains in place as officers continue their investigation.
“If you or someone you know has been raped or sexually assaulted, we encourage you not to suffer in silence and report it to the police, or a support agency so you can get the help and support available.
“Saint Mary’s Sexual Assault Referral Centre, Manchester provides a comprehensive and co-ordinated response to men, women and children who live or have been sexually assaulted within Greater Manchester.
“They offer forensic medical examinations, practical and emotional support as well as a counselling service for all ages.
“Services are available on a 24-hour basis and can be accessed by calling 0161 276 6515.
“Greater Manchester Rape Crisis is a confidential information, support and counselling service run by women for women over 18 who have been raped or sexually abused at any time in their lives. Call on 0161 273 4500 or email help@manchesterrapecrisis.co.uk
“Survivors Manchester provides specialist trauma informed support to boys and men in Greater Manchester who have experienced sexual abuse, rape or sexual exploitation. Call 0161 236 2182.”
A spokesperson for Morrisons declined to comment when approached by the Manchester Evening News.
