Fears for a 13-year-old girl missing since Friday were allayed on Monday when she walked into Wollongong Police Station.
Olivia Davis was last seen about 11.30am leaving the grounds of Wollongong High School of the Performing Arts, where she is a year 8 student.
Wollongong police issued an alert on their Facebook page expressing concern for the welfare of the teenager who did not turn up for school on Monday morning.
Police were trying to track Olivia down through her mobile phone, which she used to contact her grandmother, Christine Williams, over the weekend.
Mrs Williams said Olivia had called, saying she wasn't coming home but she had changed her mind and turned up at the station on Monday afternoon.
"She apparently turned herself in at the police station this afternoon after seeing the reports in the news about her being missing," Mrs Williams said.
Mrs Williams said she had been with a 17-year-old girl, who accompanied Olivia to the police station.
"They wouldn't tell anybody where they were, they haven't even told the police where they were," Mrs Williams said.
"As far as I know they were somewhere bumming around the streets together, that's why I was so concerned about them."
On Monday night Mrs Williams was waiting at the police station to see whether she would be able to take Olivia home. She was happy that her granddaughter was safe and well.
"I'm extremely grateful that she's been found and I'm extremely grateful to all the help that everybody gave me to try and find her," Mrs Williams said.