Joshua Riibe was the last person seen with University of Pittsburgh student Sudiksha Konanki before she went missing while in the Dominican Republic. His attorney said his passport has been confiscated by Dominican authorities and he is confined to a hotel.

The last person authorities believe may have seen Sudiksha Konanki, the 20-year-old University of Pittsburgh student who vanished while on a spring break trip in the Dominican Republic, was back on the beach — this time with investigators.

A 20-year-old University of Pittsburgh student went missing while on spring break in Punta Cana. Get updates on her case here.

Authorities in the Dominican Republic have confiscated the passport of the man who is the last person known to have been with missing University of Pittsburgh student Sudiksha Konanki, according to a source close to the investigation.

Monday marks 11 days since Sudiksha Konanki, a University of Pittsburgh student, disappeared while on a spring break trip to the Dominican Republic, prompting a widespread search from both U.S. and local authorities by land,

Missing college student Sudiksha Konaki was last seen with her friends and a “person of interest” at a hotel bar before she disappeared in the Dominican Republic earlier this month.

Sudiksha Konanki's disappearance in the Dominican Republic has led to intense scrutiny of Joshua Riibe, the last person to see her.

Joshua Riibe, the person of interest in the disappearance of Pitt student Sudiksha Konanki, had his passport seized by authorities in the Dominican Republic.