Los Angeles police have arrested an account manager on charges of embezzling more than $725,000 from the accounts of Charlton Heston and producer Stephen Cannell.Deputy District Attorney Marisa Zarate says Sharon M. Walker is charged with grand theft, forgery and filing false tax returns and will be arraigned Tuesday. Zarate declined to name the business firm where Walker had worked. Zarate says Walker is accused of stealing more than $157,000 from Heston, the Oscar-winning actor who died April 5, and more than $567,000 from Cannell, an Emmy-winning writer and producer. The 56-year-old Walker is being held on $700,000 bail. She faces up to 11 years in prison if convicted.