Ten men have been arrested after a 20-year-old woman was sexually assaulted near Draethen.
Gwent Police said it was called out of concern for the welfare of a woman seen in Draethen at around 8.55am on Saturday, June 6.
Officers atteneded and it was reported that the 20-year-old woman from Cardiff had been sexually assaulted at Cwm Leyshon Quarry.
The attack is believed to have happened in the early hours of Saturday morning.
Ten men, all aged between 25 and 29 and from the Cardiff area, were arrested and released under investigation. Police said inquiries are ongoing.
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