Maoists on Thursday attacked a man and his son on charges of being "police informers" in Jharkhand's Latehar district and also set ablaze a number of vehicles, police said. Maoists first carried out the arson in a vehicle parking area near a bus stand early in the day. They set on fire two tractors, a truck and a bike. Later they beat up Ashok Sao and his son alleging them of being police informers. The injured have been admitted to a hospital, police said. This year more than 50 vehicles have been torched by the Maoists in the state.