Thiruvananthapuram : Stone pelting at vehicles have been reported in the hartal called by Popular Front. In the incidents, Popular Front workers smashed glass windscreens of KSRTC bus in Kozhikode, Kochi, Alappuzha, Kollam and Wayanad. In Kannur’s Narayanpara, the party workers hurled petrol bombs at vehicle carrying newspapers of the day.