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South Carolina Deputy Dies During Dive Team Training
The 29-year-old master deputy had served on the dive team since 2024, and investigators are still determining the cause of death.
Lexington County Sheriff's Department Master Deputy Jillian Olson, 29, died Thursday during an underwater dive team training exercise on Lake Murray.
A native of Illinois and 2019 Western Illinois University graduate, Olson joined the department in 2021 as a patrol deputy before advancing to warrant deputy.
Olson joined the dive team in 2024 and earned the tactical operations support award in 2023 for improving training workflows. She was scheduled to receive a five-year honorable service award next month.
The South Carolina Department of Natural Resources and the State Law Enforcement Division are investigating the incident, while the Lexington County Coroner's Office conducts an independent review to determine cause and manner of death.
Sheriff Jay Koon described Olson as a valuable member who "faithfully carried out her duties and selflessly worked to make those around her better," thanking the public safety agencies that responded.