June 26, 2012 > Probation chief resigns Probation chief resigns Submitted By Guy Ashley David Muhammad, Alameda County's Chief Probation Officer, has decided to resign from his position effective August 3, 2012, in order to pursue other opportunities. The Alameda County Board of Supervisors today accepted Mr. Muhammad's resignation and wishes him the best in his future endeavors. A thorough investigation conducted by an impartial third party concluded that allegations of sexual harassment and assault against Mr. Muhammad were not substantiated. Given this conclusion, Alameda County and Mr. Muhammad will continue to defend the civil action filed against them. Acting Probation Chief LaDonna Harris will continue in her role pending further action by the Board of Supervisors.