Sayoc's first appearance in federal court was scheduled for Monday in Miami.
Since Monday, bomb-like devices were discovered addressed to top Democrats including former President Barack Obama, former Secretary of State Hillary Clinton, former Vice President Joseph R. Biden and former Attorney General Eric H. Holder Jr.
CNN said the "package looks similar in appearance to the wave of pipe bombs that were mailed last week to prominent Democrats around the country, including two that were addressed to CNN's NY bureau".
Cesar Sayoc, the 56-year-old man who is now facing five federal charges in connection with 13 intercepted suspicious packages, has a lengthy criminal record in Florida.
"He was no supporter of mine", Mr. Trump told reporters as he traveled to a campaign rally in IL on Saturday.
Steyer was one of numerous high-profile Democrats to receive a pipe bomb in the mail last week, according to The Hill.
A registered Republican, Sayoc's political views were evident on social media, railing against Democrats, Muslims and liberals in Facebook and Twitter posts.
An outspoken supporter of President Donald Trump from South Florida was charged with sending explosive packages to at least a dozen of the president's critics, apparently bringing to a close an attempted bombing spree that has gripped the country just ahead of the midterm elections.
Recall that Sayoc was charged with sending 14 bombs to a former USA president, Barack Obama and Trump's political opponent, Hillary Clinton. One Democratic staffer on Capitol Hill has been charged with "doxxing" senators, releasing their personal phone numbers and addresses online to encourage activists to target them.
AG Sessions confirmed Cesar Sayoc, 56, of Aventura, Florida was arrested in South Florida and is being questioned by the Federal Bureau of Investigation. Our footage of Mr. Sayoc would never make it into the final cut of what would be the film that is now in its last week in cinemas across America.
The packages were intercepted from DE to California. Across the street, Thomas Fiori, a former federal law enforcement officer, said he saw about 50 armed officers swarm a man standing outside a white van with windows plastered with stickers supporting Trump and criticizing media outlets including CNN. "He has often referred to major news organizations as 'the enemy of the people, ' and has shown contempt for CNN", a New York Times article stated two days before the bomber was caught.
One law enforcement official said the investigation came together less than 24 hours before the announcement, with a preliminary DNA match first and the fingerprint match coming sometime Friday morning. The Secret Service said neither package reached its intended recipient.