The passport of Joshua Riibes, an American linked to the disappearance of a University of Pittsburgh student, has been confiscated by Dominican authorities as part of an ongoing investigation, his attorneys told NBC News.

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.

The authorities said they have interviewed a man they believe was the last person to see Sudiksha Konanki, 20, before she disappeared on a spring break trip to Punta Cana.

University of Pittsburgh student Sudiksha Konanki, 20, is still missing after her Spring Break trip to Punta Cana, Dominican Republic. The 20-year-old is an Indian national, but from Chantilly, Virginia – a suburb of Washington,

Sudiksha Konanki headed to the Dominican Republic for spring break. She was staying at a beachfront resort before disappearing.

Police in the Dominican Republic say the FBI has joined the search for a 20-year-old University of Pittsburgh student who went missing nearly a week ago while on spring break.

Sudiksha Konanki, a University of Pittsburgh student from Virginia, was on spring break in Punta Cana when she was last seen early on Thursday.

A Dominican lawyer believes the possibility that missing Pitt student Sudiksha Konanki drowned is more plausible than some experts have indicated.

University of Pittsburgh student Sudiksha Konanki went missing in the tourist town of Punta Cana while on spring break with friends.

The search for the missing University of Pittsburgh student, who was on spring break in Punta Cana, is entering its second week.