Fatuma Kadir’s parents are said to be “incredibly relieved” after asking that she return home quickly.
The girl left without her parents’ knowledge on Thursday evening before taking several trains to go to London Euston in the early hours of Friday morning.
Greater Manchester Police said they are now working to reunite Fatuma with her family.
The police confirmation comes after a family friend earlier said the girl was found in the capital.
Earlier on Saturday, his father Asheem told a press conference that his behavior was “normal” before he left, adding that he had “no idea what caused this, no idea at all.”
“Why she went to London, we have no idea. “
According to her friends and family, Fatuma apparently aspired to move to London when she was older, and took it “very seriously”.
The family said, “She’s pretty friendly at school… she’s friends with everyone. “
Fatuma was spotted at the London Eye at 3 p.m. on Friday and asked a member of the public to use her phone’s data hotspot.
Speaking before she was found, Paul Robinson, Chief Inspector of Police for Bolton, said Fatuma had “a substantial amount of money with her”.
He added that the girl had told a member of the public that she was 15 and was going to see her aunt in London.
Mr Robinson said on Saturday: “We are delighted to confirm that Fatuma Kadir has been found unharmed.
“She was found in London earlier today, so we are now working to reunite her with her parents, who are, as you can imagine, incredibly relieved.
“The past two days have been every parent’s worst nightmare so I know they will agree with me when I say a big thank you to everyone who shared our call to find Fatuma. Your help has been invaluable, so thank you.
“We would now like to ask that their privacy be respected, so that they can be together as a family. ”