A key witness, who has been identified as a person of interest by the Loudon County Sheriff’s Office in the U.S. investigation of Sudiksha Konanki, shared insight into his evening with her.

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

Authorities are still searching for 20-year-old college student, Sudiksha Konanki, who went missing in the Dominican Republic last week. TMZ reports that the person of interest in her disappearance, 22-year-old Joshua Riibe has since claimed that he saved her from drowning.