The last person to see University of Pittsburgh student Sudiksha Konanki before she vanished had his passport seized by authorities in the Dominican Republic, according to a new report. Officials on the Caribbean island confiscated Joshua Riibe’s travel documents nearly 10 days after Konanki was last seen with the 22-year-old Minnesota college senior on the beach near their RIU Hotel & Resort on March 6.

The passport of Joshua Riibes, an American linked to the disappearance of a University of Pittsburgh student, has been confiscated by Dominican authorities as part of an ongoing investigation, his attorneys told NBC News.