The Robert BrownU.S. Coast Guard is searching for four missing male divers 50 miles south of Cape Fear, North Carolina, they said in a news release Sunday.

The four men were reported missing to Coast Guard officials around noon Sunday after they were diving off a leisure boat called "Big Bill's" and did not resurface, authorities said.

Officials from Coast Guard sectors in Wilmington, North Carolina, and Charleston, South Carolina, were notified and have launched the search and rescue effort. The boat was located roughly 63 miles east of Myrtle Beach.

The Coast Guard said search crews would continue looking for the four men through the night on Sunday into Monday.

Authorities did not immediately release the identities of the missing divers.