Federal agents are still searching for other possible suspects in South Florida who may have helped Sayoc, who was arrested at an auto parts store in Plantation.
In that way, Sayoc - now known as the mail bomb suspect - had already transformed into the human avatar of his van's rolling fever dream of political paranoia.
The FBI said via its Twitter account that the recovered package was "similar in appearance to others" and confirms the announcement earlier in the day by CNN President Jeff Zucker, who said a suspicious parcel being sent to the network had been intercepted at an Atlanta post office.
Authorities were able to quickly track down and arrest Sayoc last week after pipe bombs were mailed to a dozen different politicians, entertainers, former USA government officials, and well-known Democratic donors including Barack Obama, Joe Biden, Hillary Clinton, George Soros, Robert De Niro, John Brennan, James Clapper and others.
Cesar Sayoc, 56, of Aventura, Florida, faces five federal charges and could receive up to 48 years in prison if convicted. It appears that he had been living in the white Dodge van where he was found and arrested Friday morning, the law enforcement official said.
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Attorney Daniel Aaronson conceded after court that the case will be moved to NY but that Sayoc is entitled to a hearing in Miami to see if he will get bail while awaiting trial.
The defendant, wearing a khaki prison jump suit, shackled and surrounded by USA marshals, said nothing during the brief hearing but seemed to be fighting back tears.
Sayoc is charged with interstate transportation of an explosive, illegal mailing of explosives, threats against former presidents and certain other persons, threatening interstate communications, and assaulting federal officers.
One of Sayoc's attorneys, Daniel Aaronson, urged people not to rush to judgment based on media reports.
His arrest Friday came just hours after the Federal Bureau of Investigation intercepted two more suspicious packages, one addressed to Democratic Senator Cory Booker, the other to former National Intelligence Director James Clapper.
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But he admitted that the ECB doesn't have a "crystal ball" and that if sovereign bonds values slide further it will harm the capital positions of Italian banks.
News of that latest package surfaced with just over a week to go in highly charged political campaigns across the nation leading up to November 6 elections, in which Democrats are battling to seize control of a Congress now held by Trump's Republican Party.
"Criminals make mistakes so the more opportunities that law enforcement has to detect them, the greater chance they're going to be able to act on that, and that appears to be what happened here", said former Justice Department prosecutor Aloke Chakravarty, who prosecuted the Boston Marathon bombing case. And CNN, the target of the chanting in the video, was also one of the targets of the aforementioned mail bombs. Inside the vehicle were soldering equipment, stamps, envelopes, paper, a printer and powder, the sources said. He had previously worked as a male dancer for several years and more recently as a pizza driver.
In 2002, he was arrested after Miami police said he threatened to bomb a power company, saying "it would be worse than September 11th".
Court records show he had been arrested at least nine times, mostly in Florida, for accusations of grand theft, battery, fraud, drug possession, and probation violations.
But Trump's supporters have accused Democrats of unfairly suggesting that the president was to blame for the bomb scares, and Trump himself accused the press of using coverage of the investigation to score political points against him.
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His departure came after he was photographed with Prince Mohammed during a condolence visit. Defense Secretary Jim Mattis said Saturday at an global conference in the Middle East.
Among the others Sayoc is alleged to have sent explosives devices were businessman and philanthropist George Soros, Joe Biden, Maxine Waters and former Central Intelligence Agency director John Brennan.