Eight men have been arrested on suspicion of raping a young teenage girl, after dawn raids at several addresses in East London and Hertfordshire.
Five 23-year-olds, two 24-year-olds and one 21-year-old are being held in custody at a police station.
Officers from the Met's Sapphire Command are investigating alleged offences that took place between May and November 2012.
More top news
A man with no recollection of who he is has been found in London, with police appealing for help to identify him.
London Underground has made a new offer to unions to try and avert next week's tube strike. But will it work? Here's what you need to know
The Metropolitan Police has responded to allegations that they refused to enter the water to rescue a teenager who was drowning