Chhattisgarh Chief Minister Raman Singh on Sunday reacted on the dreadful Naxal attack in Chhattisgarh's Dantewada, which claimed at least six lives by calling it a 'cowardly act'. He added that the ultras are the enemies of development work in the state and they can't digest it. At least six jawans were killed in an IED blast in Dantewada's Cholnar village on Sunday. One other jawan has been injured in the blast, which ripped apart the police vehicle in which they were travelling. The bomb went off the moment the moving vehicle came over it, leaving a small crater on the road.