By 1965, the PKI extensively penetrated all levels of government and gained influence at the expense of the army. On 30 September 1965, six of the military's most senior officers were killed in an action (generally labelled an "attempted coup") by the so-called 30 September Movement, a group from within the armed forces. Within a few hours, Major General Suharto mobilised forces under his command and took control of Jakarta. Anti-communists, initially following the army's lead, went on a violent purge of communists throughout the country, killing an estimated half million people and destroying the PKI, which was officially blamed for the crisis.