Investigators suspect that the spring breaker removed her clothing, leaving it on the lounge chair, before entering the ocean and drowning while wearing a brown bikini.

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.

Authorities found clothing at the beach believed to belong to missing University of Pittsburgh student Sudiksha Konanki. She vanished over a week ago

Joshua Riibe, the last person seen with missing University of Pittsburgh student Sudiksha Konanki, had his passport confiscated by Dominican Republic authorities as part of an ongoing investigation into her disappearance.

The search for Sudiksha Konanki, a University of Pittsburgh student who disappeared while on spring break in Punta Cana, Dominican Republic, has taken a heartbreaking turn. Clothing believed to belong to the 22-year-old was discovered on a lounge chair at the beach where she was last seen.

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.

The parents of the man who was last seen with Sudiksha Konanki in the Dominican Republic released a statement on Friday.

The man who last saw missing University of Pittsburgh student Sudiksha Konanki told investigators he thought she was OK and had "taken her things and left."