LIVINGSTON, Calif. (AP) -- A retired Stockton police captain is facing charges that he flashed a gun at another driver during what authorities say was a road rage incident on a Central Valley highway.

Merced County prosecutors charged 60-year-old David Swim with one count of felony exhibition of a firearm to a person in a motor vehicle last week.

Authorities say Swim pulled the gun on Highway 99 in Livingston on Nov. 30 after another driver saw him using a cellphone and shook his head while driving by. Swim allegedly exited the highway later.

The California Highway Patrol says officers searched Swim's vehicle at his home and found a handgun.

Swim's attorney, John Virga, tells the Sacramento Bee his client did not brandish a firearm.

Swim is currently a professor of criminal justice at California State University, Sacramento.

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