reported it to Prime Minister Chang Myon and Defense Minister Hyeon Seok-ho. Chang Myon was dissuaded from commissioning an investigation by the intervention of Army Chief of Staff Chang Do-yong, who convinced him that the security report was unreliable. Pervasive unrealized rumours of the imminence of a military coup also contributed to Chang Myon's decision, and the report on the May 12 plan was dismissed as a false alarm. The coup organizers responded by aborting the May 12 plan and fixing a new, and final, date and time, 3am on May 16. Course of events The plot was leaked once again early in the morning of May 16, and this time immediate action was taken. The Counter-Intelligence Command raised an alert that a mutiny was underway, and a detachment of military police was sent to round up the suspected perpetrators. Park moved to the Sixth District Army Headquarters to take personal control of the coup operations and salvage the plan. Park gave a speech to the assembled soldiers, saying: The speech was so successful that even the military police who had been dispatched to arrest the mutineers defected to their cause. With the Sixth District Army now secure under his control, Park chose Colonel Kim Jae-chun to organize the vanguard of the occupation of Seoul and dispatched a message to Chang Do-yong, instructing him to definitively join the coup or suffer the consequences of association with the civilian government. He then departed for Special Forces Command, where he issued instructions to cross the Han River and occupy the presidential residence at the Blue House. Meanwhile, an artillery brigade occupied the central Army Headquarters and secured the downtown areas of Seoul north of the Han. By 4:15am, after a brief exchange of fire with loyalist military police who were guarding the bridge across the Han, Park's forces had occupied the administrative buildings of all three branches of government. They proceeded to seize the headquarters of the Korean Broadcasting System, issuing a proclamation announcing the Military Revolutionary Committee's seizure of power: The broadcast went on to outline the policy objectives of the coup, including anti-communism, strengthening of ties with the United States, the elimination of political corruption, the construction of an autonomous national economy, Korean reunification, and the removal of the present generation of politicians. The proclamation was issued in the name of Chang Do-yong, who was referred to as the Chairman