A Sedalia teen was killed in an accident late Friday night in northeast Pettis County. Investigators said the crash occurred at about 10:15 p.m. near the intersection of Olive Branch Road and Route HH. The Highway Patrol reports Joshua Holbert, 19, traveled off the side of the road, struck a guardrail, and overturned. His vehicle continued down an embankment and came to rest in a treeline. Holbert was pronounced dead at the scene.