"...Four brand-new houses in the Catalina Foothills north of Tucson sit blackened in total or partial ruin. On June 12, shortly after midnight, an arsonist torched the 5,000- to 8,000-square-foot vacant structures, causing $2 million in damage. Phoenix has experienced 11 such arsons of trophy homes during the last three years, and the Tucson fires followed a similar pattern. In Tucson, as in Phoenix, a graffiti signature - CSP, or Coalition to Save the Preserves - was found near the homesites."
Thanks to The Practice of New Urbanism