MILPITAS, Calif. — Officials are looking for who shot video of a group of motorcycle riders alternately taunting and ignoring an officer trying to pull them over while they pop their front wheels in the air and weave on a Northern California highway.

The confrontation earlier this month on Interstate 680 in Milpitas was filmed by one of the riders, who approaches the California Highway Patrol officer and motions for him to go away.

The officer pulls ahead, and the motorcyclist waves goodbye as another rider puts a fist in the air.

Officer Ross Lee tells the San Jose Mercury News the officer in the video later pulled over and waited for backup to help him follow the motorcyclists until they left the freeway. He says the officer did what was safe.