A Sydney teenager was on a plane bound for the US to meet a 39-year-old man on the day her parents reported her missing more than a month ago.
Sean Price, 39, is behind bars in a New York jail accused of contacting the 16-year-old from Lindfield on Sydney's upper north shore on Snapchat in October 2016 and enticing her overseas for sex.
The girl, named in US court documents was "Jane Doe", was reported missing on April 11 and a search of flight records revealed she had left the country, Australian Federal Police told AAP.
It's alleged Price transferred about $2000 to the girl's bank account before she fled on a plane to Los Angeles.
US prosecutors allege the pair met and travelled in a hire car to New York, where Price lived with his mother in Queens.
On May 12, NYPD officers went to Price's home and caught him and the girl trying to hide in the basement.
The girl has since returned to Australia, AFP confirmed.
Her parents are working with Australian and US officials to determined exactly what happened to lead the girl to leave Australia.