Five men arrested in Bolton on suspicion of rape or conspiracy to commit rape have been bailed until next January.
Officers from the Greater Manchester Police Serious Sexual Offences Unit coordinated the operation at various address across the town.
It follows allegations that a 15-year-old girl suffered numerous sexual assaults between 2011 and 2012.
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Dry with some winter sunshine, but feeling cold
Frosty, icy start on Sunday with fog patches lingering in places. Away from the fog, some good wintry sunshine
Police were called after the plane was stuck at Manchester Airport for hours because of a light covering of snow, according to passengers.