Riibe was named as a "person of interest" in the case, though he has not been formally accused of any crime or charged.

Sudiksha Konanki, a 20-year-old Indian-American student, vanished while on a spring break trip to Punta Cana, Dominican Republic.

The top prosecutor in the Dominican Republic personally questioned Joshua Riibe Saturday, the last known person seen with missing Virginia college student Sudiksha Konanki, as authorities intensify their investigation into her disappearance.

Even as an investigation into the case is underway, police in the Caribbean country have been interrogating one person -- Joshua Steven Riibe -- over the past several days. Here's what we know about him so far.

The last person to see University of Pittsburgh student Sudiksha Konanki before she disappeared in the Dominican Republic has had his passport taken by investigators. Authorities in the Caribbean country have confiscated Joshua Riibe’s travel documents as they continue to probe Konanki’s disappearance, according to NBC News.

Authorities in the Dominican Republic have seized the passport of Joshua Riibe, the man seen with University of Pittsburgh student Sudiksha Konanki before she went missing, Fox News has learned.

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.

Joshua Riibe, the person of interest in the disappearance of Pitt student Sudiksha Konanki, had his passport seized by authorities in the Dominican Republic.