SAN DIEGO — A 91-year-old woman was killed on Friday when her car careened off a Clairemont Mesa thoroughfare and plowed into a utility pole, authorities confirmed.

The woman was driving southbound on the 6000 block of Mt. Alifan Drive when she collided with another woman’s vehicle in the intersection of Balboa Avenue, according to SDPD. The 91-year-old’s vehicle then hit a light pole, killing the driver.

The other woman involved in the accident suffered minor bruises and scratches.

Police closed the street between Genesee Avenue and Cannington Drive to allow for investigation and cleanup, and issued a congestion alert for the busy area. That stretch of roadway was expected to remain closed until about 3 p.m.

On Feb. 25, authorities identified the 91-year-old woman as Doris Lucille Guffin. Investigators determined Guffin was driving “at a high rate of speed” and ran a red light at the intersection of Mt. Abernathy and Balboa.