It's a phenomenon experienced by the families of missing people when a body is never found, experts say: grief without certainty.

The parents of missing University of Pittsburgh student Sudiksha Konanki have asked for Dominican authorities to declare their daughter dead. Their request highlights the heartbreaking realities of losing a child and handling the legalities of a missing person case.

American Joshua Riibe, who was likely the last person seen with missing University of Pittsburgh student Sudiksha Konanki before she disappeared during spring break in the Dominican Republic, is back in the United States after what he calls a dayslong detainment.

Joshua Riibe, the former “person of interest” in Sudiksha Konanki’s disappearance, was briefly detained in Puerto Rico on his way home from the Dominican Republic.