Sayoc's social media profiles show dozens of photos of him around South Florida and attending Trump rallies. They also claim he works for the Hard Rock Hotel, but a spokesperson said there is no evidence of this.
Sayoc, whose grandmother's last name was Altieri, goes by Cesar Altieri in his online profiles. They show he was a serious Trump supporter who loathed the Clintons and George Soros. Videos on one of Altieri's Facebook profiles show him at Trump rallies and posing with Michael the Black Man, who supports the president. Sayoc's Facebook profiles have since been taken down and his Twitter accounts have been suspended.
On October 3, Sayoc tweeted at Eric Holder, one of the people to whom a bomb was addressed, saying, "See u soon Tick Tock."
In another, he targeted Joe Biden, who also received a bomb, calling him a "piece of slime trash."
"Hug your loved son, niece, wife, family real close everytime you walk out of your home," Sayoc wrote, sharing images of an aerial view of Biden's home with a target on it and pictures of his family.
In one tweet posted this past March 12, Sayoc shared an image with the faces of many of the people to whom he would later allegedly send pipe bombs. Posted under the headline "The Swamp to Be Drained!" were images of the Clintons, Barack Obama, Debbie Wasserman Schultz, Eric Holder, and Maxine Waters.
A tweet from just two weeks ago shows Sayoc at a Trump event holding a sign that reads, "Time Warner AKA CNN Is the Clinton Campaign's Largest Donor."
Other posts show him calling Muslims rapists and pedophiles, as well as claiming that Marjory Stoneman Douglas shooting survivor and activist David Hogg is a phony paid by Soros.
David Hoggs fake phony big gets con job never attended Parkland High School.He graduated 2015 from Redondo Bch High School.He is a paid George Soros actor fraud pic.twitter.com/oGKD53q1F2— Cesar Altieri (@hardrock2016) August 12, 2018
Sayoc, whose grandmother filed a temporary injunction for domestic violence against him in 1994, frequently shared violent images of gangs, beheaded goats, snakes killing people, ISIS, and people in military fatigues.
This past February, Sayoc sent what appears to be a poorly worded death threat. "The enemy of America help Obama, Clinton fund ISIS," he wrote. "It beyond
He also threatened MSNBC newscaster Andrea Mitchell.
This one for you MSNBC Andrea Mitchell . A promise reply to your threats . We will answer is coming see you soon https://t.co/3qA4y4IxmB— Cesar Altieri (@hardrock2016) July 14, 2018
Earlier this year, Sayoc posted a meme falsely accusing Soros of being one of Hitler's followers:
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At a news conference Friday afternoon, U.S. Attorney General Jeff Sessions said the suspect faces five federal charges punishable by up to 58 years in prison. Charges include interstate transportation of an explosive, illegal mailing of an explosive, threats against a former president and others, threatening interstate communications, and assaulting current and former federal officers.
MSNBC reports he also was the sole follower of two accounts called Kill George Soros and Kill All Socialists.