Supporters of Mexican gambling tycoon Jorge Hank Rhon protest against his arrest in Tijuana June 7, 2011. Hank Rhon, an eccentric former mayor of Tijuana who collects exotic animals, was arrested on Saturday after the army found a large weapons cache in his home. The millionaire businessman, who owns a successful chain of casinos, a soccer team and racetrack, was arrested during a raid in an upscale Tijuana neighborhood, the army and federal prosecutors said in a statement. The sign on the left shows an image of Hank Rhon and on the right reads, "We demand the release of Engineer Hank Rhon." REUTERS/Jorge Duenes (MEXICO - Tags: POLITICS CIVIL UNREST CRIME LAW)