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.

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.

Days after Sudiksha Konanki, of Virginia, disappeared, a person of interest recalled the hours before and after she was last seen heading toward a beach.

A 'person of interest' has been named — but no charges have been filed — amid the search for missing college student Sudiksha Konanki, 20, who vanished during a spring break trip to the Dominican Republic.

Virginia law enforcement officials identified a person of interest Wednesday in the disappearance of a US college student from a Punta Cana resort.

A Minnesota college senior “may have been the last person to see” a 20-year-old woman who went missing a week ago while on spring break in the Dominican Republic tourist town of Punta Cana, officials said.