On the night of 30 September – 1 October 1965, six senior army generals were kidnapped and executed in Jakarta by a battalion of soldiers from the Tjakrabirawa Regiment (Presidential Guard) in an "attempted coup." The right faction among the top generals was wiped out, including the powerful Chief of Staff of the Army, Ahmad Yani, but the Minister of Defence, Abdul Haris Nasution, escaped. Around 2,000 troops from coup groups occupied three sides of Merdeka Square, and commanded the Presidential Palace, radio station, and telecommunications centre, but did not occupy the east side, site of Kostrad headquarters. Calling themselves the "30 September Movement", the group announced on radio around 7am that they were trying to stop a military coup backed by the US Central Intelligence Agency (CIA) that was planned to remove Sukarno from power.