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.

St. Cloud State senior Joshua Riibe has remained in his hotel room under police surveillance when not questioned at the police station, his parents said.

University of Pittsburgh student Sudiksha Konanki, 20, is still missing after her Spring Break trip to Punta Cana, Dominican Republic. The 20-year-old is an Indian national, but from Chantilly, Virginia – a suburb of Washington,