1957 Cadasan coup d'etat

The 1957 Cadasan coup d'etat happened in Cadasa on March 17, 1957. The Labour president Tan Yeng Sen was feared by the and  due to his socialist policies. A group of right-wing high-ranking Cadasan Armed Forces military officers led by general S. P. Situmorang and the Chiu twins then seized power in a coup. Not a single drop of blood was shed and at noon, Situmorang declared martial law over the radio and suspended the constitution.