Kanza, who was well acquainted with Bomboko, suggested that he should receive charge of Foreign Affairs, because he was an elected deputy and had more political support.

Lumumba eventually agreed to this proposal,[5] but made Mandi Secretary of State for Foreign Affairs so he could monitor his activities.

Upon hearing what had occurred, Lumumba directed Bomboko to assume responsibility of the security of all foreign delegations present in the Congo and ensure that the Soviets could safely depart.

[16] On 10 July, Belgian troops staged a military intervention to protect their nationals and began occupying portions of the Congo.

[18] On 15 July he appeared before Parliament to reject accusations of personal "complicity" in regards to the Belgian intervention and to affirm his concurrence with the actions taken by Prime Minister Lumumba and President Joseph Kasa-Vubu to restore order.

[19] On 28 July he was made a member of a cabinet committee tasked with managing the government's relations with the United Nations.