Four Naxals have been arrested in two separate incidents in Paka police station of Palamu district of Jharkhand. The police sources have told AIR Ranchi Correspondent that Naxals belonging to Peoples Liberation Front of India were planning to carry out attacks and following a tip off, they were arrested.In another Naxal related incident from the state, the nxals belonging to CPI (Maoists) have shot dead their own ex- area commander Sonu Yadav in Kati village under Chatra district.Speaking to our Correspondent, the SP of Chatra Prabhat Kumar told that the killed Maoists was a dreaded Maoist and he was wanted in many acts of violence. Recently he had started drifting away from the organisation, which resulted in his killing.