According to Havana’s statement, the boat — registered in Florida with number FL7726SH — was detected within Cuban territorial waters Wednesday morning on the northeast side of the El Pino channel near Cayo Falcones in Villa Clara province. 

"As a consequence of the confrontation, as of the time of this report, four aggressors on the foreign vessel were killed and six were injured," the ministry said, adding that the injured were evacuated and are receiving medical care. 

"In the face of current challenges, Cuba reaffirms its determination to protect its territorial waters, based on the principle that national defense is a fundamental pillar of the Cuban State in safeguarding its sovereignty and ensuring stability in the region."

It also said investigations are ongoing to fully clarify the events.

According to data retrieved by Fox News Digital, the vessel is a 24-foot Pro-Line boat and while the registration matches Florida records, the boat is not documented with the U.S. Coast Guard under the provided hull identification number, PLC00916M81D.

Florida Attorney General James Uthmeier also announced on X that he had directed the Office of Statewide Prosecution to work with federal, state and local law enforcement partners to start an investigation.

In his statement, Uthmeier said the Cuban government "cannot be trusted" and vowed that his office would "do everything in our power to hold these communists accountable."

The incident happened while Secretary of State Marco Rubio is in the Caribbean for a summit of the Caribbean Community, or CARICOM, in Saint Kitts and Nevis. 

Rubio is meeting regional leaders for closed-door talks on security, economic cooperation and shared concerns about U.S. policies in the hemisphere.

Meanwhile, Rep. Carlos Gimenez, R-Fla., called for an "immediate investigation" Wednesday in a statement.

"I am calling for an immediate investigation into this massacre. United States authorities must determine whether any of the victims were U.S. citizens or legal residents and establish exactly what occurred," Gimenez said.

"The regime in Cuba must be relegated to the dustbin of history for its countless crimes against humanity," he added.

Sen. Rick Scott, R-Fla., said he agreed with Rep. Carlos Gimenez, writing on X: "We need a full investigation into this deeply concerning situation and to determine what happened. The Communist Cuban regime must be held accountable!"

This is a developing story. Check back for updates.