The Secret Service is investigating after a Florida man was arrested in West Palm Beach and charged with calling for the assassination of President Donald Trump on Facebook.

Shannon Depararro Atkins, 46, of West Palm Beach, was arrested after allegedly threatening the life of the president, West Palm Beach Interim Police Chief Tony Araujo confirmed during a press conference Saturday.

Atkins is charged with felony intimidation, drug possession and smuggling contraband in a county detention center, according to jail records. 

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A tip was called in to the FBI National Threat Operations Center late Sunday, reporting Atkins was making violent threats against the president on Facebook.

A Palm Beach detective began working the case Monday and found "disturbing" posts, according to Araujo.

Some of the posts included, "Lincoln, JFK, Reagan, Martin Luther King and Trump - unfortunately, one is still alive"; "Bullets, please. Jesus, save America"; and "I've been banned from X because I said 'I hope and pray someone kills him. We haven't had an assassination in years.'"

The department secured a probable cause warrant and began surveillance, arresting Atkins near one of his homes at 7:30 p.m. Friday.

Officers found three bags of cocaine in Atkins' pocket at the time of the arrest, according to Araujo. 

While being interviewed, he admitted to writing the Facebook posts but said he was joking, authorities said.

"Folks, this is not a joke. Nothing of that sort is a joke," Araujo said during the press conference.

The threats came after two assassination attempts on Trump in July and September.

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The Secret Service was notified and is reviewing the case to determine whether there will be federal charges, the department said.

"The U.S. Secret Service does not comment on matters involving protective intelligence," the agency wrote in an email to Fox News Digital Saturday. "What we can say is that the Secret Service investigates all threats against our protectees."

Authorities confirmed the FBI was also involved in the investigation.

Araujo said, in today's climate, people cannot make threats, even jokingly.

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"We have incident after incident, example after example, of when these threats become real, and we take these very seriously," he said. "Did we avert something? You never know. I do know that we developed probable cause, we arrested Mr. Atkins and he's going to have to answer the charges."

Atkins' bond was set at $5,000 for the drug charges, but bond was denied for the threats against Trump, according to jail records.

A Florida congresswoman and Air Force veteran is urging anyone who encountered New Orleans terrorist Shamsud-Din Jabbar or Las Vegas bomber Matthew Livelsberger at Fort Liberty, formerly Fort Bragg, to contact her office.

She also asked for information on failed assassin Ryan Routh, a former North Carolina man who was arrested at President-elect Donald Trump's Florida golf course while allegedly aiming a rifle through the fence while the soon-to-be commander in chief was playing a round.

"If you are at Fort Bragg (Liberty) and have any information regarding these three men but are afraid to come forward to your chain of command, I can provide whistleblower protection and intake information," Rep. Anna Paulina Luna wrote in a post on X Thursday night.

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Routh, 58, had roots in North Carolina but was most recently living in Hawaii. Luna appeared to reference a recent report that Routh, a civilian with a lengthy criminal history, had visited Fort Bragg dozens of times.

Luna is a member of the House Oversight and Accountability Committee. Her office did not immediately respond to requests for comment.

The Army said Thursday that while both Jabbar and Livelsberger served at the North Carolina base, there was no overlap in the time they were stationed there.

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In Las Vegas, Clark County Sheriff Kevin McMahill said that while both men went to Afghanistan in 2009, any potential ties there were still under investigation.

"We don't have any evidence that they were in the same province in Afghanistan, the same location or the same unit," McMahill said. "Again, something else that remains under investigation."

Both men used the Turo app to rent electric pickup trucks used in the incidents, he said. 

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Between 2007 and 2015, Jabbar was a human resources specialist and an IT specialist. From 2015 to 2020, he remained an IT specialist in the Army Reserve. Livelsberger was an active-duty Army Green Beret in the 10th Special Forces group.

Livelsberger, 37, has been identified as the man who exploded inside a Cybertruck loaded with explosive and flammable material just steps from the front door at Trump International Hotel Las Vegas on New Year's Day.

Speaking about a potential motive, authorities on Friday released sections of a "manifesto" left by Livelsberger, who wrote that "This was not a terrorist attack, it was a wake up call."

PTSD and ongoing family problems were likely factors as well, sheriff's officials said.

Hours earlier, Jabbar, 42, plowed a rented Ford EV pickup into pedestrians on New Orleans' famous Bourbon Street, killing at least 14 and injuring more than 30. After crashing, he opened fire on police and died in a shootout. The FBI said Thursday that the Texas native had vowed allegiance to ISIS and was a domestic terrorist.

FBI Deputy Assistant Director Christopher Raia told reporters in New Orleans Thursday that there was "no definitive link" uncovered between the attack and the explosion, but authorities on both cases said they were still investigating.