SOUTH FORSYTH — The Forsyth County Sheriff Office is still investigating recent vandalism in an historic cemetery in south Forsyth. “This is a very unusual and very sad case, so we are still investigating to try to find out who did this,” said Robin Regan, a spokesman for the office. A few weeks ago, Dawson County resident Donnie Munda discovered that his family’s cemetery on Ronald Reagan Boulevard near the Forsyth-Fulton line had been destroyed by vandals.