On December 4, 1920, when the Red Army entered Yerevan, the government of the First Republic of Armenia effectively surrendered. On December 5 the Armenian Revolutionary Committee (Revkom), made up of mostly Armenians from Azerbaijan, also entered the city. Finally, on the following day, December 6, Felix Dzerzhinsky's dreaded secret police, the Cheka, entered Yerevan, thus effectively ending all existence of the First Republic of Armenia.[18]