Boston.comEx-Massachusetts State Treasurer Cahill Pleads Not GuiltyBusinessWeekBy Janelle Lawrence and Don Jeffrey on April 04, 2012 Ex-Massachusetts Treasurer Timothy Cahill pleaded not guilty to charges that he improperly used state lottery advertising funds to promote his unsuccessful run for governor in 2010.Former Mass. treasurer Timothy Cahill pleads not guilty to ethics charges over ...Washington PostFormer Mass.