Pipe bomb suspect Cesar Sayoc Jr., the man accused of mailing explosive devices to prominent Democrats and former intelligence officials who have been critical of and criticized by President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE, on Tuesday was ordered to be held without bail by a federal judge.

Sayoc, who was transferred to New York to face federal charges after being held in custody in Florida, was called “a serious risk of danger to the public and a flight risk,” by Assistant U.S. Attorney Jane Kim, The Associated Press reported.

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None of the devices Sayoc mailed exploded and no injuries were reported, but the attempts sparked a national conversation about the nation’s political climate and politicians’ rhetoric about those with whom they disagreed.

Sayoc's lawyers did not seek his release on bail, according to the AP report.

Sayoc was arrested in South Florida, where he was living in a van covered in Trump campaign stickers and paraphernalia. He was linked to the devices through DNA and fingerprint matches and internet searches on some of the explosives’ targets.

Targets included Bill and Hillary Clinton Hillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE, former President Obama, Sen. Cory Booker Cory Anthony BookerBipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (D-N.J.), Sen. Kamala Harris Kamala HarrisButtigieg stands in as Pence for Harris's debate practice First presidential debate to cover coronavirus, Supreme Court Harris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda MORE (D-Calif.), Democratic donor George Soros, former Attorney General Eric Holder Eric Himpton HolderThe Hill's Campaign Report: Trump's rally risk | Biden ramps up legal team | Biden hits Trump over climate policy Biden campaign forming 'special litigation' team ahead of possible voting battle Pompeo, Engel poised for battle in contempt proceedings MORE, former Director of National Intelligence James Clapper James Robert ClapperOn China, Biden is no Nixon — and no Trump The Hill's 12:30 Report - Speculation over Biden's running mate announcement Trump slams former intelligence officials to explain 'reluctance to embrace' agencies MORE and others.

All had been vocal critics of Trump’s rhetoric and policy agendas.

“As far as the president’s concerned, and again this is purely a fantasy because he’s already made it clear he’s not going to do this and I’m not suggesting a clear cause and effect relationship ... but I do think he bears some responsibility of the coarseness and uncivility in the dialogue in this country and he needs to remember that his words count, his voice is the most important in this country,” Clapper said on CNN after the explosive device sent to him was discovered.

Sayoc will appear in federal court on Monday for a preliminary hearing.