"This brazen ambush in a region which has seen repeated Maoist attacks highlights the inadequacies of the security strategy meant to deal with the Maoist violence," the party Politburo said in a statement here.
It said it was imperative that the Centre and the state government "together work out an effective strategy to counter the Maoist armed groups."
Yesterday's attack in Sukma district of Chattisgarh resulted in the killing of 11 paramilitary jawans, four policemen and a civilian.