A person was killed in a single-car accident late Friday night on I-85 in Gwinnett County, police said.

I-85 northbound between Buford Drive and Hamilton Mill Road was completely shut down and traffic was being diverted, Cpl. Jake Smith said.

Investigators were on the scene.

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Inventor Lonnie Johnson stands with his Super Soaker water guns at JTEC Energy on Wednesday, Oct. 29, 2025, in Atlanta. Johnson, a former NASA engineer, is currently working on a new energy technology through his company’s JTEC device that turns thermal heat into usable energy. (Natrice Miller/AJC)