At least six polling officials were killed when Maoists Saturday attacked their vehicle in Chhattisgarh's Bijapur district, an official said.
The polling party was returning after balloting got over Thursday. There were 12 people in the bus that came under attack.
Six were killed while six were injured.
Reports are also coming in of another attack on an ambulance in Bastar region. Paramilitary troopers were in the vehicle.
