Riibe is a key witness in the disappearance of Sudiksha Konanki, an American college student who went missing while swimming on a Punta Cana beach on March 6. (Fox News Digital) Riibe is a key witness in the disappearance of Sudiksha Konanki, an American college student who went missing while swimming on a Punta Cana beach on March 6. (Fox News Digital)