The man's death occurred one week after two Wayne County teens got caught in a dangerous rip current at Emerald Isle.
READ MORE: BODY OF MISSING WAYNE COUNTY TEEN FOUND OFF EMERALD ISLE
Around 11 a.m., the Atlantic Beach Fire Department responded to a report of three people in the water needing assistance.
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Authorities said the man went into the water to rescue the girls from a rip current after hearing them screaming.
Officials performed CPR on man and one of the teenagers was transported to the hospital.
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Authorities expect the girls will be okay.
Red flags were posted to let residents and visitors know the risk for swimming along the Crystal Coast was high.