A Los Angeles police officer has been shot in an ambush attack but she's expected to recover.

The Los Angeles Police Department says the officer, a recent graduate of the police academy, was shot while patrolling with her training officer shortly before 10 p.m. Friday in the Rampart area.

Police tell KCBS-TV that they had stopped someone for what's termed a "minor infraction" when shots rang out from a distance.

Police Chief Charlie Beck on Saturday called it "an unprovoked and cowardly attack."

The officer was shot in the thigh and is in stable condition at a hospital.

Beck says she's in "remarkably good spirits."

The LAPD says a 28-year-old man was arrested and a gun was seized.