FILE - In this June 3,2008 file photo, mixed martial artist Tito Ortiz at a taping of MTV's "Total Request Live" show in Times Square New York. California police say the former Ultimate Fighting champion has been arrested on suspicion of domestic violence.Mixed martial arts star Tito Ortiz claims his ex-porn star girlfriend is addicted to Oxycontin, and he blames Jenna Jameson's drug use for his arrest Monday on suspicion of domestic violence. Ortiz was arrested in Huntington Beach at the home he shares with Jameson and their twin sons.