The search has intensified for missing University of Pittsburgh student Sudiksha Konanki, who was last seen in the early hours of March 6 on a beach outside the five-star RIU Republica Resort in Punta Cana, Dominican Republic.

Authorities are chasing leads after surveillance video showed Konanki’s last known moves before she vanished. The video, obtained by Noticias SIN, captured the group striding towards the beach near the lux retreat around 4:15 am. 

A male friend who was with Konanki around the time of her disappearance is under investigation. Police said he was in the water at the same beach, and they are questioning him in an attempt to corroborate his version of events, according to a translation of a Spanish-language statement.

Authorities have not named any suspects amid their ongoing investigation. In a release on Tuesday, the Dominican National Police said it is “re-interviewing targeted individuals who were in the victim’s proximity at the time of her disappearance.”

The University of Pittsburgh Police Department also provided an update Monday, saying it is also working with the Loudon County Sheriff’s Office in the search efforts for Konanki. 

The hotel said its team is “providing full support to the authorities in the search, and an emergency protocol has been activated to ensure that all necessary measures are taken.”

A joint investigation into Konanki’s disappearance is being conducted by the U.S. Embassy in the Dominican Republic, the Dominican National Police and the Dominican Prosecutors Office. The FBI is also assisting.

Fox News Digital’s Audrey Conklin, Sarah Rumpf-Whitten, and Michael Ruiz contributed to this report.