A fishing vessel carrying a crew of nine people capsized off the coastal city of Tongyeong in southern South Korea on Saturday, causing seven people to go missing, according to the Coast Guard.

Officials said that two South Koreans and seven Indonesians were on board the 29-ton ship when it capsized 68 kilometers south of an island in Tongyeong, in South Gyeongsang Province, at 6:29 AM.

Officials noted that two unconscious crew members were found inside the vessel and transported to the hospital; their nationalities were not immediately known.

Yonhap News Agency quoted officials as saying that 11 Coast Guard patrol boats, two Navy ships, and five helicopters are conducting a search operation for the missing persons at the incident site.