Specially-trained police have been questioning a five-year-old girl who turned up safe after fears she had been abducted.
Liti Sake was handed in by a relative at a police station in east London early on Saturday.
She was unharmed and officers were yesterday talking to her about what happened.
Police launched a major manhunt on Friday after Liti disappeared from a flat in Eriswell Road, Worthing.
They could find no trace of the youngster and a woman who had been caring for her, Hamsetu Smy, had also disappeared.
Detectives from Sussex Police's major crime branch worked with specialist search and forensic staff and four women and two men, from the Worthing and London area, were arrested.
There were fears Liti had been abducted. All six have since been released on bail for four weeks while investigations continue.
The alarm was raised when neighbours in Eriswell Road called police on Wednesday saying they had heard a girl screaming and crying.
When police arrived Liti was not at the flat and her carer, Ms Smy, said she was staying with a relative in Brighton.
An arrangement was made for police to check on the child's welfare but on Friday morning they found no trace of the child and Ms Smy had also gone missing.
Police have since tracked down Ms Smy and interviewed her.
The woman who brought Liti into the police station at 2am on Saturday has also been questioned by Sussex police.
Liti, whose mother is Nigerian, is being looked after by social services while the investigation continues.
Detective Superintendent Martin Cheeseman, head of the Sussex Police child protection unit, said: "Our priority was always to find Liti and we are delighted she has been found safe and well.
"The focus of our inquiry has now shifted to find out where she has been during the past few days.
"We have had a lot of helpful work and support from the public and would ask anyone who may be able to help us in our investigations to contact us."
Police believe Liti has been in England for a number of weeks and may have been brought here from Nigeria by her mother.
They think the screaming heard by neighbours may have been an over-zealous telling-off.
Neighbours said Liti hardly ever left the house and did not appear to play outside or go to school.
They said the family did not mix with neighbours but people were always going in and out of the house.
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