Authorities have identified three men who were killed when their boat capsized in rough seas off Catalina Island.

Young Joon Park, 64 and Kyung Hwam Kim, 47, both of Los Angeles, and Jason Jung Noh, 62, of Buena Park were killed when their 15-foot skiff overturned off of Salta Verde Point, on California's Catalina Island. Sheriff’s officials told the Associated Press that four other men were rescued but remain hospitalized, two in critical condition.

Sondra-Kay Kneen of the U.S. Coast Guard says a witness reported that the boat had seven people on board when it overturned. Waves in the area were reported to be four to six feet.

“A long period south to southwest swell has been affecting Southern California since late last week,” said weather.com meteorologist Chris Dolce. “This has caused high surf in both the coastal and offshore waters, as well as rip currents at beaches. Based on buoy data, waves were in the 4-7 foot range in the coastal waters Saturday morning.”

Officials identified the deceased as Kyung Kim, 47, of Los Angeles, Jason Noh, 62, of Buena Park, and Young Park, 64, of Los Angeles , NBC Los Angeles reports.

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The Pacific Quest, a chartered fishing boat, reported the capsizing around 9:30 a.m. Saturday and crew members onboard managed to pull four people from the water, but two were unresponsive, according to U.S. Coast Guard representative Sondra-Kay Kneen.

“They immediately began CPR until Baywatch Avalon got on scene and they took over the CPR effort,” Coast Guard Lt. Christine Igisomar told KTLA-TV.

Another person was pulled from nearby rocks by a Coast Guard helicopter and lifeguards pulled another person from the water. A third person was found on a beach.

Detectives are investigating the circumstances surrounding the deaths, KTLA also reports.

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