Four U.S. military personnel are being detained by the Libyan government, the State Department confirmed on Friday night, reports.

“We are seeking to further ascertain the facts and ensure their release,” State Department spokesman Jen Psaki said. “We are in touch with Libyan officials on this issue.”

Though the circumstances of the personnel’s detention are unknown, the New York Times reported that the incident seemingly took place in a tourist area about an hour from the capital of Tripoli. The region is considered to be friendly to Westerners for the most part, the report adds.

This is a breaking news story and updates will be added.