Lexington County deputy dies during underwater training session

A Lexington County deputy has died during an underwater training session on Lake Murray.

Jillian Olson, 29, had been a deputy since 2021 and a member of the dive team since 2024.

“Our hearts are broken by the loss of a valuable member of the Sheriff’s Department,” Lexington County Sheriff Jay Koon said. “Jillian exemplified commitment and service. She faithfully carried out her duties and selflessly worked to make those around her better.”

The South Carolina Department of Natural Resources is leading the investigation along with a Lexington County coroner to determine Olson’s cause and manner of death.