A man who investigators believe was the last person to see missing US college student Sudiksha Konanki alive appeared in a Dominican Republic court Tuesday to ask it to grant him freedom, arguing Dominican authorities have inappropriately restricted his movements without charges after the 20-year-old woman’s disappearance.

A 20-year-old University of Pittsburgh student went missing while on spring break in Punta Cana. Her parents have asked Dominic Republic police to declare her dead.