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

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.

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.

Joshua Riibe, the person of interest in Sudiksha Konanki's March 6 disappearance in the Dominican Republic, has spoken out for the first time, stating that he is 'just trying to help.'

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.

Punta Cana.- Joshua Steven Riibe, the last known person to see Sudiksha Konanki before her disappearance on March 6 at a Punta Cana beach, was interviewed by the Public Ministry. During the interrogation,

Joshua Riibe, a 24-year-old tourist from Iowa, has come under the spotlight, with investigators naming him a 'person of interest.'