The search for a US college student who went missing in the Dominican Republic intensified on Monday after a man questioned by authorities visited the beach where she was last seen and spoke with officials. Sudiksha Konanki, a 20-year-old student at the University of Pittsburgh and an Indian citizen, vanished before dawn on March 6 in the resort town of Punta Cana. Authorities are scouring waters in case she drowned. Minnesota student Joshua Riibe has not been named as a suspect but is believed to be the last person to see her. On Sunday, he and his attorney met with officials on the beach. On Monday, Riibe's attorney officially requested his release. A judge is expected to issue a ruling on Tuesday, according to an official who spoke on condition of anonymity because they were not authorized to share the information. According to the transcript of an interview with prosecutors, reported by Dominican media as well as NBC and Telemundo, Riibe told police he was drinking with Konanki