The family of a missing Pennsylvania woman has hired a private investigator to look into her mysterious disappearance.

As CrimeOnline previously reported, 26-year-old Cassandra Jones was last seen on July 10 in Philadelphia. Jones, who lives in Southhampton and is a student at Temple University, had been visiting a friend near Philadelphia’s Chinatown neighborhood and left that residence early in the morning of July 10, a Saturday.

Investigators reportedly found her phone at or near the residence, and authorities have released surveillance images of her vehicle approaching I-95 around 6 a.m. July 10. Jones’ car, a silver 2016 Ford Focus, has not been seen since.

According to CBS Philadelphia, Johnston’s family has hired a private investigator to help search for her. Police have not yet commented on whether they believe foul play may be involved in the young woman’s disappearance.