A van in Plantation was towed away to Miramar, Florida, where an Federal Bureau of Investigation field office is located, a law enforcement official said. Closeup photos of the van, posted by a Twitter user who said he saw the auto at a stoplight in April, show rifle scope images over the faces of Hilary Clinton, left wing filmmaker Michael Moore and President Barack Obama.
The tape on the pipe is "an investigator's dream", he said, recalling a case in Texas that was solved because the fibers on the tape were traced to the bomber's dog.
The Miami Herald said the suspect was being questioned by Federal Bureau of Investigation agents with the joint terrorism task force since his arrest at about 10am local time.
Law enforcement agencies are treating the mailing campaign as an act of political terrorism and have escalated their search for the suspect, while emphasizing that they do not regard the bombs as fake or the repeated episodes as a hoax.
Trump, after Sayoc was apprehended, declared that "we must never allow political violence take root in America" and Americans "must unify".
CNN said Friday morning that multiple law enforcement sources confirmed the man's arrest in South Florida. Miami Herald news partner CBS4 reports a "loud explosion" was heard at the time of the arrest, possibly from an Federal Bureau of Investigation flash bomb device.
Photographs circulating on social media showed what appeared to be the same van that was taken from the scene, identifiable by some of the same stickers. Soros has called Trump's presidency "dangerous".
Court documents later established that the van, which was covered with pro-Trump and anti-CNN images, belonged to Sayoc; a former attorney who had represented him told NPR Sayoc has been living in a van for some time. Cory Booker and former Director of National Intelligence James Clapper, the latest to be sent to prominent Democrats and critics of President Donald Trump that were discovered earlier this week.
Justice Department officials revealed that a latent fingerprint found on one package helped them identify their suspect as Cesar Sayoc, 56, of Aventura, Florida.
Authorities acknowledged additional undelivered packages could still be in the mail.More news: U.S. brands falter in Consumer Reports auto reliability survey
Spokeswoman Sarah Flores says a news conference is scheduled for later Friday.
Twelve packages have been sent to figures such as former president Barack Obama and actor Robert de Niro in recent days.
"There's something more powerful than bombs", he said, "and that's your vote".
The packages addressed to Biden were intercepted at DE mail facilities in New Castle and Wilmington, according to a law enforcement official who, like others, wasn't authorized to discuss the investigation and spoke on condition of anonymity.
"Some of the packages went through the mail".
A 14th package was found on Friday at a post office outside San Francisco addressed to another wealthy contributor to the Democratic Party and liberal causes, Tom Steyer.
Wasserman Schultz called the packages "sinister and evil".
The Clapper package arrived in a manila envelope with six U.S. flag stamps, similar to other packages discovered this week.
The packages were sent in manila envelopes lined with bubble wrap, each stamped with six postage stamps bearing the picture of an American flag. Investigators were likely relying on that system to pinpoint where some of the packages were mailed.
When the now-familiar chant of "lock her up" - a reference to Clinton - rose up out of the crowd, Trump smiled and said, "They're going to be reporting about you tonight".
"Whoever is doing this is just trying to elicit a fear or disrupt something", said Ryan Morris, founder of Tripwire Operations Group, a company that provides explosives training to law enforcement and military officials.