A man who walked onto the northbound 57 Freeway in Orange County late Wednesday night was struck by a car and killed, authorities said.
The incident occurred about 10 minutes before midnight on the freeway just north of Yorba Linda Boulevard, according to the California Highway Patrol.
The driver was traveling about 65 mph when "for unknown reasons" the man walked into the lane in front of the car, and the driver was unable to swerve away, the CHP said.
The man, who was not immediately identified, was taken to a hospital, where he died.
A spokeswoman for the CHP said there were early reports that someone may have been changing a tire on the side of the road or had pulled over, but the information was unclear. The investigation is ongoing.
The 23-year-old female driver from Rowland Heights was not arrested.
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