The crash occurred around 3:35 p.m. on State Route 94, east of Plaskon Lane in Potrero.

Potrero, CA – A 41-year-old woman was killed and four people, including three students, were injured Friday afternoon when her car crossed into oncoming traffic and collided head-on with a school bus in rural San Diego County, according to the California Highway Patrol.
The crash occurred around 3:35 p.m. on State Route 94, east of Plaskon Lane in Potrero.
CHP officials said the woman was driving a 2017 Honda Civic eastbound when she crossed the double-yellow centerlines for reasons that remain unknown. The Honda struck a westbound school bus, causing the car to spin out of control and hit a raised berm along the south side of the roadway.
The school bus veered off the north side of the road and struck a fence, a telephone pole, and two mailboxes.
The Honda driver, a Potrero resident, died from her injuries. The bus driver, a 53-year-old man from Boulevard, and three students sustained minor injuries.
The cause of the crash remains under investigation.
