Naxals have put up banners in Balaghat district of Madhya Pradesh, giving a call to observe ' Shaheed Saptah' or 'martyrs' week', which prompted the police to step up security in the area, an official said on July 30.
Balaghat, located in the south eastern region of Madhya Pradesh, is one of the three Naxal-affected districts in the State with Mandla and Dindori being the other two.