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Police are trying to track down a good Samaritan who helped a 17-year-old girl from West Africa after she escaped a Sydney home where she was reportedly held captive as a sex slave.
The woman, believed to be named Nicole, drove the girl to an inner west asylum seeker centre three weeks ago.
It's hoped Nicole can pinpoint where she found the teen so police can narrow their search for her captor.
The girl from Guinea says in January she met a man in her home country who offered to bring her to Australia as his cleaner and in April they travelled together via Paris to Sydney, NSW and federal police revealed on Friday.
She was driven to a home believed to be in the city's metropolitan area - where she was kept in a room and sexually assaulted by a number of men.
In the early hours of April 27, the girl managed to escape and ran until she was picked up by Nicole in a small red car.
After consultation with the University of Technology Sydney's anti-slavery unit the teen was taken to Royal Prince Alfred Hospital for treatment.
She remains in the care of Family and Community Services.
The AFP's human trafficking unit has been brought in to investigate along with NSW Police State Crime Command's sex crimes squad.
They're keen to speak to anyone who may have seen or heard from the teen after she escaped.