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

Joshua Riibe, 22, was one of the last people to see missing student Sudiksha Konanki, 20, who disappeared over a week ago in the Dominican Republic.

Joshua Steven Riibe, 24, has been identified as the man seen hugging and walking hand-in-hand with the 20-year-old student just hours before she vanished in the Dominican Republic.

According to a source involved in the investigation, Riibe, a former high school wrestler with a strong build, has been "cooperative" with authorities.

Sudiksha Konanki’s puzzling disappearance comes as thousands of students prepare to embark on spring break trips of their own.

Sudiksha Konanki, like many students, headed to the Dominican Republic for spring break. She was staying at a beachfront resort before disappearing.

The key witness connected to missing college student Sudiskha Konanki's disappearance in the Dominican Republic has told police that he and the 20-year-old woman were swimming, when they were swept away by a big wave.