The man who is the last person known to have been with missing University of Pittsburgh student Sudiksha Konanki is on a plane heading back to the US after he obtained a new passport, a source in the prosecutor’s office told CNN Wednesday.

The man, Joshua Steven Riibe, was never named as a suspect in the disappearance of Sudiksha Konanki in Punta Cana, but he said he had not been allowed to leave the Dominican Republic.