Caste violence continued to divide the impoverished state of Bihar. There, the Ranvir Sena, a banned private militia of upper-caste landlords that had been operating with impunity since 1994, waged war on various Maoist guerrilla factions, such as the People's War Group (PWG). These guerrilla groups advocated higher wages and more equitable land distribution for lower-caste laborers. The cycle of retaliatory attacks claimed many civilian lives.
On April 25, upper-caste Rajputs shot and killed four Dalits and seriously injured three in Rohtas district, Bihar. Rajputs subsequently burned down the entire Dalit hamlet, leaving all twenty-five families homeless. The attack was reportedly in retaliation for the killing of two Rajputs a few days earlier by members of the outlawed PWG. On June 16, in Miapur village in Bihar's Aurangabad district, the Ranvir Sena slaughtered thirty-four lower-caste men, women, and children. Survivors reported that police left the scene when the attacking mob entered the village. The massacre was reportedly to avenge the killings by Maoist guerrillas of twelve upper-caste Bhumihars the week before, and thirty-four Bhumihars in March 1999. Some Ranvir Sena members were arrested in the weeks that followed, but there was no precedent for successful prosecutions in such cases.
Police blamed the July 13 killings of four upper-caste Hindus in Garwah district on the PWG. On September 13 the Maoist Communist Centre, another armed group, slit nine people
