 President Kasa-Vubu began fearing a Lumumbist coup d'état would take place.On the evening of 5 September, Kasa-Vubu announced over radio that he had dismissed Lumumba and six of his ministers from the government for the massacres in South Kasai and for involving the Soviets in the Congo.Upon hearing the broadcast, Lumumba went to the national radio station, which was under UN guard.