The Justice Department announced Tuesday that four more men now face criminal charges in connection with the July 2021 assassination of Haitian President Jovenel Moïse that threw the Caribbean nation into constitutional chaos.

Among the four was aspiring Haitian politician 54-year-old Christian Sanon, charged with smuggling 20 ballistic vests "for use by his private military forces" from South Florida to Haiti on June 10, 2021, officials said in a news release.

The three others — Haitian American dual citizens James Solages, 37, and Joseph Vincent, 57, along with 44-year-old Colombian citizen German Alejandro Rivera Garcia — have been charged with conspiring to commit murder or kidnapping outside the United States and providing material support and resources toward the effort, officials wrote.

Vincent's defense attorney Regina de Moraes told the Miami Herald that Vincent was happy to be in American custody and out of a Haitian jail: "My client, his family and I are extremely satisfied that he is now on U.S. soil. The conditions of his imprisonment in Haiti were the equivalent of torture. My client has always been forthcoming with his knowledge of the events leading up to the tragic death of President Moise."

Authorities wrote that the men met in South Florida in April 2021 to "discuss regime change in Haiti and support for Sanon, an aspiring Haitian political candidate." After the meeting, "a list of equipment and weapons needed for the regime change operation" was shared with Solages, who then shared it with Sanon, according to the news release. The list included rifles, machine guns, tear gas, grenades, ammunition and bulletproof vests.

The news release said Sanon in May 2021 starting getting equipment to support his "private military" forces that included about 20 Colombian nationals with military training recruited to help the operation and provide security for Sanon. Authorities wrote that Rivera led the Colombian group.

As support in mid-June 2021 shifted from Moïse to a former Haitian Supreme Court Judge, that judge signed a document asking for help to arrest and imprison Moïse, authorities wrote. "In addition, a document purportedly signed by that Judge claimed to provide immunity in Haiti to those who participated in the operation."

Solages, Vincent and Rivera along with others on June 19, 2021, discussed a plan to capture Moïse and fly him to an unknown location, authorities wrote. The men didn't go through with the plan because they couldn't get the plane and weapons needed.

A week later, investigators wrote, Solages traveled from Haiti to South Florida and shared with others documents allegedly signed by the Haitian judge "requesting assistance and immunity. Solages flew back to Haiti on July 1, 2021, to participate in the operation against the President."

Authorities wrote that Solages, Vincent, Rivera and others met on July 6, 2021, at a house near Moïse's residence "where firearms and equipment were distributed and Solages announced that the mission was to kill President Moïse."

The next day, several people in ballistic vests entered the president's home and killed him. Moïse's assassination punctuated months of political instability and gang violence in the nation of 11 million people.

Solages, Vincent and Rivera face life in prison if convicted, according to the news release. Sanon faces up to 20 years if convicted.

The four men are scheduled to make their initial court appearances Wednesday before U.S. Magistrate Judge Alicia Otazo-Reyes in Miami.

Three others — Mario Antonio Palacios Palacios, 43, Rodolphe Jaar, 49, and Joseph Joel John, 51 — are already in U.S. custody on charges linked to the assassination.