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

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

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.

The “person of interest” in the disappearance of missing Pitt student Sudiksha Konanki claims he saved them both from drowning before she vanished.

Cops have named person of interest in the case of Sudiksha Konanki, a University of Pittsburgh student who went missing while on a spring break holiday in Punta Cana, Dominican Republic. Loudoun County,

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.

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.