US police have arrested four more people for alleged roles in the plot to assassinate Haitian President Jovenel Moise in 2021.
One of the suspects is the owner of a Florida-based security company, which authorities say hired Colombian ex-soldiers for the mission.
President Moise was shot and killed at his home in Port-au-Prince, reportedly by Spanish-speaking foreign mercenaries.
Eleven suspects are now in US custody.
According to the Justice Department (DOJ), Venezuelan-American Antonio "Tony" Intriago, who is the owner of Florida-based CTU Security, hired a squad of former Colombian soldiers for the operation. He has now been hit with a slew of charges, including conspiracy to kill or kidnap a person outside of the US.
A CTU company representative, Colombian citizen Arcangel Pretel Ortiz, has also been arrested.
A third suspect, Florida-based financier Walter Veintemilla, is accused of financing the plot to kill Mr Moise. His attorney told the Associated Press that he plans to plead not guilty.
The fourth suspect - Frederick Joseph Bergmann Jr - has been accused of smuggling ballistic vests as part of the plot.
"It is extremely important to bring (them) to justice," said US Attorney for the Southern District of Florida Markenzy Lapointe. "We will deliver justice in the courtroom."