India, March 25 -- A viral video on social media is being circulated with the claim that it shows the moment University of Pittsburgh student Sudiksha Konanki drowned. The clip shows a woman being pulled into the ocean by surging waves. In the video, a man and a woman can be seen in knee-deep water before crashing waves knock them over, and then carry the woman out of sight as the man tries to rescue her.

Konanki, 20, an Indian-origin woman, vanished while on a spring break holiday in Punta Cana, Dominican Republic. She was last seen at the Riu Republica Resort beach on March 6 around 4:50 am.

The clip appears to depict the kind of scenario Joshua Riibe, the person last seen with Konanki, described when he was previously interrogated by...