India, March 16 -- Joshua Riibe, the person of interest in the disappearance of University of Pittsburgh student Sudiksha Konanki, had his passport seized by authorities in the Dominican Republic, the New York Post reported. Nearly 10 days after Konanki was seen with Riibe, his travel documents were confiscated by officials on the Caribbean island.

Riibe, an Iowa native, said he is cooperating with authorities. "I'm just trying to help them out," he told NBC News. "The ocean is a dangerous place."

Attorneys for Riibe acknowledged that his passport was seized. Riibe, a St. Cloud State University student, has been ordered to remain at the hotel during the investigation. He is reportedly "permanently" paired with police escorts.

Riibe is ...