My question involves a traffic ticket from the state of: California

I was driving with my friend (my car, he was driving) and he was going 100+, after we got on the off ramp, a Chevy cruze, with red and blue lights where the rear view mirror is, pulled us over and a Human Services employee came out. It wasn't a patrol car, but it had lights, and he wasn't CHP, can he issue tickets on the Freeway? It was also a 22350 with clear and sunny conditions and the ticket says 85, and he didn't radar or lidar us either. We were on highway fifty and Prairie City exit, just inside Folsom City limits.