A missing New Jersey teen whose family feared she became a sex trafficking victim was found safe in Philadelphia on Monday — more than a week after she went missing, authorities said.

Aviana Weaver, 17, was first reported missing in Mount Holly, New Jersey, on Sept. 12 after she went to a friend’s house to study. Her mother told police she received a text message from an unknown number claiming it was her daughter and she was being held against her will.

On Monday, the Burlington County Prosecutor’s Office announced Aviana was found safe in Philadelphia by the local police department and thanked authorities for their help.

“She is in the process of being reunited with her family,” read a tweet from the prosecutor’s office just before 5 p.m. “Out of respect for Aviana and her family, no further details will be released.”

Weaver’s phone last pinged in Philadelphia, but it was shut off.

Aviana’s worried mother, Angelica Scarlett, said investigators found “pornography pictures” of her daughter on sex trafficking websites, and she looked “completely upset and unhappy.”

“We don’t have family or friends in Philadelphia. It’s completely out of character and scary,” Scarlett told New Jersey 101.5.