Photo by Alexander Nguyen

A 69-year-old woman was seriously injured when she was struck by a vehicle in the Colina del Sol community of San Diego, police said Sunday.

The motorist driving the vehicle, a 33-year-old man, was not injured, according to Officer Robert Heims of the San Diego Police Department. It was not immediately known if the driver was cited or arrested.

The woman was crossing El Cajon Boulevard southbound in an unmarked crosswalk when she was struck a little before 9 p.m. Saturday by a 2017 Toyota Corolla going eastbound on El Cajon Boulevard, Heims said.

The woman suffered a skull fracture and several other injuries that were considered life-threatening, he said.

— City News Service contributed to this article