O fficials are continuing the search for a University of Pittsburgh student who went missing last week during her spring break trip in the Dominican Republic.  Sudiksha Konanki, 20, was last seen early Thursday, March 6, when video surveillance cameras showed her appearing to enter the beach of the Hotel Riu in Punta Cana with a friend, who is currently under investigation, according to the Dominican Republic National Police .  The police were first informed of her disappearance on Friday at 8