Authorities have ramped up their efforts by air, sea and land to track down the 20-year-old University of Pittsburgh student who went missing six days ago while vacationing in the Dominican Republic resort town of Punta Cana.

Sudiksha Konanki, a University of Pittsburgh student, went missing in Punta Cana, Dominican Republic on March 6. She was on spring break with friends and was last seen on the beach near her hotel at around 4:50 a.m. The F.B.I. joined the investigation into her disappearance and U.S. detectives have been sent to the Dominican Republic.

New surveillance video appears to show the final moments before 20-year-old Pitt student Sudiksha Konanki disappeared in the Dominican Republic. The college student was seen walking from the hotel to the beach with her friends,