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.

Recalling the incident, Riibe informed Dominican authorities he was startled to learn about her disappearance. Both Konanki and Riibua had last travelled to the sea. According to US authorities, it is a missing person's case than criminal matter.

Joshua Riibe, believed to be the last person to see Sudiksha Konanki before she vanished in Punta Cana, said he's trying to 'help' investigators as he warned 'the ocean is a dangerous place'