Authorities in the Dominican Republic are turning up the heat on the Iowa man who was the last person to see University of Pittsburgh student Sudiksha Konanki before she went missing — grilling him into the early morning hours on Sunday.

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

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, 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.

Joshua Riibe is not considered a suspect in Konanki's disappearance and has not been accused of a crime James Fishback, an investment manager who briefly worked with Vivek Ramaswamy in the earliest days of the Department of Government Efficiency (DOGE),

Authorities say the man isn't a suspect but he may have been the last to see the University of Pittsburgh student.

Joshua Riibe has been detained "under irregular conditions," according to his family. He has not been named as a suspect.