Coup Atlas Research Database
← Back to explorer
49009141960SuccessfulMilitary coup

Democratic Republic of the Congo, 1960 — military coup

Democratic Republic of the Congo (COD)Central Africa, AfricaSeptember 14, 1960

Event Summary

The Congo crisis of 1960 came to a head on September 14 when Colonel Joseph Mobutu, chief of staff of the Congolese National Army, launched a bloodless coup in Leopoldville. President Joseph Kasa-Vubu had dismissed Prime Minister Patrice Lumumba on September 5; Lumumba refused to recognize the decree and declared Kasa-Vubu deposed in turn. Mobutu announced that the army was neutralizing both rivals and the legislature until December 31 and installed the College of Commissioners-General, a caretaker government of university graduates, while ordering Soviet bloc personnel out of the country.

Lumumba was confined to his residence, where United Nations peacekeepers prevented his arrest, but Mobutu privately aligned with Kasa-Vubu, who was retained as head of state. Declassified records show the CIA station under Lawrence Devlin financed and advised Mobutu before and after the takeover. Lumumba was captured by Mobutu's troops in December 1960 after leaving UN protection and was killed in Katanga on January 17, 1961.

Researched Details

Researched

Independent research, added record by record. Hover any label for what it means.

Target identified in Coup Atlas research: Prime Minister Patrice Lumumba, with President Joseph Kasa-Vubu also declared neutralized. Lumumba was placed under house arrest, captured in December 1960, and killed in Katanga on January 17, 1961; Kasa-Vubu was retained and later restored as president.
RESEARCHED NAME
Key figures
Joseph Mobutu (army chief of staff, coup leader)
Patrice Lumumba (deposed prime minister, later killed)
Joseph Kasa-Vubu (president, declared neutralized then retained)
Lawrence Devlin (CIA station chief, financier and adviser to Mobutu)
Victor Lundula (army commander dismissed in the pre-coup crisis)

Sources

On September 5, 1960 Kasavubu dismissed Lumumba from the government; Lumumba ignored the decree and dismissed Kasavubu, and on September 14 Colonel Joseph Mobutu of the Congolese National Army orchestrated a coup and ordered the Soviets out of the country.
SOURCE REVIEWED U.S. Department of State, Office of the Historian, Milestones: The Congo, Decolonization, and the Cold War open source ↗
A CIA station cable of September 16, 1960 reported that UN troops had prevented Congolese National Army soldiers from arresting Lumumba under a warrant after the coup, and that the station advised its contacts to work with Mobutu in an effort to eliminate Lumumba.
SOURCE REVIEWED Foreign Relations of the United States, 1964-1968, Volume XXIII, Congo, Document 22 open source ↗
On 14 September Mobutu launched a bloodless coup declaring both Kasa-Vubu and Lumumba neutralized and established the College of Commissioners-General, a government of university graduates; Lumumba was forced to retire to his residence, where UN peacekeepers prevented his arrest.
SOURCE REVIEWED Wikipedia, Mobutu Sese Seko open source ↗
CIA station chief Lawrence Devlin agreed to finance Mobutu's plan to take over the government; after September 14 the agency supplied money, warnings, and ministerial recommendations, and counseled Mobutu to reject reconciliation with Lumumba and arrest him instead.
SOURCE REVIEWED Stephen R. Weissman, What Really Happened in Congo, Foreign Affairs open source ↗

Editorial Note

The dataset leader fate deposed; killed; placed under house arrest tracks Lumumba's full trajectory: house arrest immediately after the coup, capture by Mobutu's forces in December 1960, and killing in Katanga on January 17, 1961, documented in the cited sources. Arc link: Mobutu seized power outright in a second coup on November 25, 1965. Handled per checklist caution: every claim about the killing is sourced, none editorialized.

Cross-Reference

Datasets agree. At least two of the three reference datasets we check against carry this event, and none of them disagrees about its date or its result.

Identifiers for finding this same event in the other datasets:

Cline Center id
49009141960
Albrecht/Koehler/Schutz (CAM) id
CAM-490-1960-09-14

How the match is made is described in crossref-report.md.

Outcome and Target

Coup Atlas research identifies the target as: Prime Minister Patrice Lumumba, with President Joseph Kasa-Vubu also declared neutralized. Lumumba was placed under house arrest, captured in December 1960, and killed in Katanga on January 17, 1961; Kasa-Vubu was retained and later restored as president..

Baseline coding: Incumbent executive removed from power. Recorded leader fate: deposed; killed; placed under house arrest. The baseline file does not name individual targets; researched names are kept in a separate layer.

Baseline Dataset Citation
Cline Center Coup d’État Project Dataset, v2.2.2
Peyton, Buddy, Joseph Bajjalieh, Michael Martin, and Andrea Gerald. 2026. Cline Center Coup d’État Project Dataset. Cline Center for Advanced Social Research. V.2.2.2. February 17. University of Illinois Urbana-Champaign. doi: 10.13012/B2IDB-9651987_V10
Open dataset DOI ↗
⚑ This citation establishes the coded baseline record; use the claim-level sources above for the researched narrative.

Baseline Source-Document Entries

CSP

Named in the baseline source document; no article citation was recorded.

Wikipedia

en.wikipedia.org/wiki/History_of_the_Democratic_Republic_of_the_Congo

New York Times

“Chief Denies Coup,” by Henry Tanner, September 15, 1960

This is the citation trail carried by the baseline dataset, grouped by outlet and rejoined from the line-wrapped original. Coup Atlas has not independently re-checked every document; read the original before citing a specific claim. URLs the import damaged beyond safe repair are shown as plain text and listed in citations-report.md. How this list is built →

Know something about this event?
Tips are reviewed against sources before anything is added.

Related Records

Democratic Republic of the Congo — Military coup, 19651965-11-25SuccessfulCentral AfricaDemocratic Republic of the Congo — Military coup, 19751975-06-18AttemptedCentral AfricaDemocratic Republic of the Congo — Military coup, 19921992-01-22AttemptedCentral Africa