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

The Dominican Republic authorities grilling Iowa man Joshua Riibe into the early morning hours Sunday as the mysterious disappearance of 20-year-old S

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

Joshua Steven Riibe, an American from Rock Rapids, Iowa, has been named in the investigation into the disappearance of Sudiksha Konanki. Riibe, a senior at St. Cloud State University in Minnesota, was the last person seen with Konanki before she vanished in Punta Cana on March 6.

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.

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 named person of interest Sudiksha Konanki case; Search ongoing for missing Pitt student