On September 17 to 18, 1988 a group of non-commissioned officers in Haiti's Presidential Guard overthrew General Henri Namphy and installed General Prosper Avril as president, three months after Namphy had seized power himself. Namphy had ousted the civilian President Leslie Manigat in June 1988. His brief rule was destabilized by violence, most notably the September 11, 1988 St.
Jean Bosco massacre, an attack on a church by armed men linked to former Tonton Macoute that Namphy failed to condemn. In the early hours of September 18, 1988, sergeants of the Presidential Guard mutinied, overthrew Namphy, and brought forward Lieutenant General Prosper Avril, a former Duvalier associate and Namphy's own right-hand man, as the new head of state. Namphy was sent into exile in the Dominican Republic.
Researched Details
Researched
Independent research, added record by record. Hover any label for what it means.
Target identified in Coup Atlas research: General Henri Namphy, overthrown on September 18, 1988 by a Presidential Guard mutiny that installed Prosper Avril; Namphy was sent into exile.
RESEARCHED NAME
Key figures
Henri Namphy (general overthrown)
Prosper Avril (general installed as president)
Sources
The September 1988 Haitian coup took place on 18 September 1988, when a group of non-commissioned officers in the Haitian Presidential Guard overthrew General Henri Namphy and brought General Prosper Avril to power, Namphy having overthrown Manigat in the June 1988 coup.
SOURCE REVIEWEDWikipedia, September 1988 Haitian coup d'etatopen source ↗
The St. Jean Bosco massacre on 11 September, attributed to former Tonton Macoute, contributed to the September coup, particularly after Namphy failed to condemn it and six participants were allowed to appear on national television the following day and issue further threats.
SOURCE REVIEWEDWikipedia, September 1988 Haitian coup d'etatopen source ↗
In a brief statement read in the name of the Presidential Guard, Sgt. Joseph Heubreux explained the coup as an attempt by non-commissioned officers to restore honor to the Armed Forces of Haiti and to end a period of random violence and confusion in the army chain of command under General Namphy, and introduced the new head of state Prosper Avril as the most honest officer in the Haitian Armed Forces.
SOURCE REVIEWEDWikipedia, September 1988 Haitian coup d'etatopen source ↗
Avril had been removed from the National Council of Government in 1986 following demonstrations protesting his links to the previous regime of Jean-Claude Duvalier, and Lt. Gen. Prosper Avril stated that he accepted the nomination as President to save the country from anarchy and chaos.
SOURCE REVIEWEDWikipedia, September 1988 Haitian coup d'etatopen source ↗
Editorial Note
Fate coding: the deposed leader General Henri Namphy was overthrown and sent into exile (the Dominican Republic), matching the dataset's exiled fate; he was not physically harmed. Coding note: the dataset labels this a military coup, accurately, a mutiny by non-commissioned officers of the Presidential Guard that installed General Prosper Avril. Arc link: this follows directly from the June 1988 coup in which Namphy himself took power (enriched in the same batch), continuing the volatile post-Duvalier Haiti thread; Avril, like Namphy, had ties to the former Duvalier regime. Trigger recorded: the September 11, 1988 St. Jean Bosco massacre, an attack on a church attributed to former Tonton Macoute that Namphy failed to condemn, is recorded as the documented catalyst, with the killings there attributed to their sources rather than adjudicated. Neutrality maintained on the contested subject. Aftermath: Avril ruled until March 1990, when he in turn was pushed out amid protests, a separate later event.
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:
Coup Atlas research identifies the target as: General Henri Namphy, overthrown on September 18, 1988 by a Presidential Guard mutiny that installed Prosper Avril; Namphy was sent into exile..
Baseline coding: Incumbent executive removed from power. Recorded leader fate: deposed; exiled. 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
“Military Leader is Ousted in Haiti...” September 18, 1988
“New Haiti Chiefs Charm 3 Backers of Democracy,” September 28, 1988
“Haitians take to the Street Again to Call for Military Ruler’s Ouster,” March 10, 1990
“Protestors Press Haitian Ruler to resign,” March 9, 1990
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 →