According to a source involved in the investigation, Riibe, a former high school wrestler with a strong build, has been "cooperative" with authorities.

A person of interest has been named in the ongoing investigation into the disappearance of 20-year-old Sudiksha Konanki, a pre-med student at the University of Pittsburgh who went missing while vacationing with friends in the Dominican Republic.

Joshua Riibe named person of interest Sudiksha Konanki case; Search ongoing for missing Pitt student