India, March 17 -- Authorities have revealed that Joshua Riibe, the person of interest in the disappearance of University of Pittsburgh student Sudiksha Konanki, was interrogated by Dominican Attorney General Yeni Berenice Reynoso and Navy Vice Admiral Agustin Morillo Rodriguez until nearly 3 am on Sunday, March 16, according to the Spanish-language outlet Noticias SIN. Riibe, an Iowa native and a senior at St. Cloud State University in Minnesota, has been "in custody" since shortly after Konanki disappeared on March 6, the outlet reported. He is expected to be questioned on Monday, March 17, again.

While Riibe is considered a person of interest, he has not been charged or accused of wrongdoing. Authorities in the Dominican Republic have...