Around 1:30 p.m., crews were called to a drowning call at the Mystery Lake Scuba Park.
Officials said 49-year-old Ronda Dalton of Pulaski, Virginia, and her boyfriend were scuba diving when Dalton started to have trouble breathing and surfaced.
According to the Wake County Sheriff's Office, the pair was swimming back to shore when Dalton lost consciousness.
When EMS arrived, the victim's boyfriend was performing CPR. However, those attempts were unsuccessful and Dalton was pronounced dead on scene.
Officials have not released an exact cause of death.
The sheriff's office is handling the investigation.