Zhou Enlai died in January 1976, and in the subsequent months of mourning, a power struggle occurred in the top echelons of the party. The reformist Deng was named acting premier, while the Gang of Four began using their newspapers to criticize Deng and to mobilize their urban militia groups. Much of the military and party security remained under the control of the party elders of the Central Committee, who generally took a cautious role in mediating between the reformist Deng and the radical Gang of Four. They agreed to the removal of Deng from office after the April Tiananmen Incident, but took steps to ensure that Deng and his allies would not be personally harmed in the process.