Government car auctions in california?

How do i ind out about an auction for cars that have been repossessed by the government?Government car auctions in california?
government gets there cars from various departments that will be sold off as in military,and other different branches of the government and cars taken from federal court cases once they are done with them since some of the cars are used for under cover work usually nothing repo'd. usually find something in the paper letting the public know when its coming and going to be held also do yahoo search might find something in there if nothing then no auctions at this time