Sen. Marco Rubio Marco Antonio RubioMurky TikTok deal raises questions about China's role Sunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Florida senators pushing to keep Daylight Savings Time during pandemic MORE (R-Fla.) on Friday called for Cuban diplomats in the U.S. to be expelled after the Trump administration ordered over half of its diplomatic staff to leave Havana in the wake of mysterious health attacks.

"In light of these harmful attacks against American diplomatic personnel in Cuba, it is weak, unacceptable and outrageous for the U.S. State Department to allow Raul Castro to keep as many of his operatives in the U.S. as he wants," Rubio, who is the son of Cuban immigrants, said in a statement.

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"The State Department must conduct its own investigation independent of the Castro regime and submit a comprehensive report to Congress. Until those responsible for these attacks are brought to justice, the U.S. should immediately expel an equal number of Cuban operatives, downgrade the U.S. embassy in Havana to an interests section, and consider re-listing Cuba as a state sponsor of terror," he continued.

The senator also issued a series of tweets blasting the island nation's government and the attack.

Some at @StateDept want massive drawdown of Americans at @USEmbCuba but allow Castro to keep regime embassy in DC virtually the same 1/2 — Marco Rubio (@marcorubio) September 29, 2017

So Castro regime allows attacks on Americans forcing us to drawdown to keep them safe but he gets to keep about same # of people here? 2/2 — Marco Rubio (@marcorubio) September 29, 2017

Shameful that @StateDept withdraws most staff from @USEmbCuba but Castro can keep as many as he wants in U.S. https://t.co/YKDP6O0nEz — Marco Rubio (@marcorubio) September 29, 2017

Rubio's comments come after the State Department announced on Friday that it ordered roughly 60 percent of its staff and their families at the U.S. Embassy in Havana to leave.

“The health, safety, and well-being of our Embassy community is our greatest concern,” Secretary of State Rex Tillerson Rex Wayne TillersonGary Cohn: 'I haven't made up my mind' on vote for president in November Kushner says 'Alice in Wonderland' describes Trump presidency: Woodward book Conspicuous by their absence from the Republican Convention MORE said.

“We will continue to aggressively investigate these attacks until the matter is resolved," he said.

The attacks, which initially were thought to be the cause of a covert sonic device, started in the fall of 2016 and continued until as recently as late August, according to the State Department.

There have been 21 confirmed cases of the symptoms that range from hearing loss to balance problems to difficulty sleeping, according to a State Department official.