On the night of April 11, 1918, Felix Dzerzhinsky, director of the Cheka, had a force of approximately 5,000 Soviet troops attack the anarchist headquarters in Moscow. Anarchists returned fire, with the help of artillery, but the Bolsheviks suppressed resistance on Donskaya Street and entered into a firefight on Povarskaya Street. The last stronghold of the Black Guard was the Zeitlin mansion, which was taken by 12 noon, and in general, the fighting between the forces of the Cheka and the anarchists stopped by 2 PM. As a result of this operation, the Bolsheviks killed 40 anarchists, some of whom were shot on the spot. In addition, 10 to 12 security officers and soldiers were killed in the fighting.