SF COP ACCUSED OF SPENDING ON-DUTY HOURS AT HOME: SAN FRANCISCO (AP) — A San Francisco police officer was charged with theft of public money after officials said he spent his days at home when he should have been walking a beat. The San Francisco Chronicle reports undercover officers watched 52-year-old Ronald Gehrke go home repeatedly over a period of months while he was on duty. An investigation was launched after a neighbor wrote to police brass wondering why Gehrke's department cruiser was often parked in the driveway of his house near Lake Merced.