Sudiksha Konanki, 20, was last seen at around 4:50 a.m. Thursday while walking on a beach in Punta Cana, Dominican Republic authorities said.

Sudiksha Konanki was last seen before dawn on March 6 at a beach near the resort where she was staying, according to Civil Defense officials, who said the search for her continued on Sunday.

The search for missing University of Pittsburgh student Sudiksha Konanki, who vanished while on a spring break trip in the Dominican Republic, entered its fourth day Monday. Konanki, a legal permanent resident of the United States and an Indian citizen.