Police are today investigating an alleged rape of a 13-year-old girl in an attack believed to have involved a dozen or more men.
Five men, aged between 17 and mid-20s, were arrested after the incident on Saturday.
It is understood the girl was raped by one man after being forced to engage in sexual acts with around 12 others.
The attack is alleged to have occurred in Harehills, Leeds, on Saturday evening.
The girl is believed to have been found wandering in a traumatic condition at 5am the following morning.
All five men arrested were later bailed pending further inquiries, West Yorkshire Police said.
The teenager is now being looked after by specially trained officers.
Two areas believed to be linked to the incident were sealed off by police as forensic experts scoured the ground seeking evidence.
After initial inquiries by detectives from the North East Leeds divisional CID, the investigation was taken over by the West Yorkshire Police specialist rape unit Operation Topaz.
A police spokeswoman said: "Police are investigating allegations of a serious sexual assault on a 13-year-old girl which took place on Saturday evening in the Hoveringham Park area of Harehills.'
"Five males, aged between 17 and mid-20s, were arrested in connection with the incident. All five have been bailed pending further inquiries.'
Police are appealing for anyone with information to come forward.
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