Sayoc also had multiple run-ins with the law in Broward County, including for grand theft and battery.
Even so, Runyon told MSNBC, "they probably had it done". "And I'm committed to doing everything in my power as president to stop it and to stop it now".
The FBI says DNA evidence and a fingerprint on the pipe bomb packages led them to Sayoc in Aventura, Florida. Coworkers say he was DJing at a club the night before he was picked up by the FBI, Myre reports. The Department of Justice has a press conference scheduled at 2:30 EST and we will update this post as more information becomes available.
The intended recipients of packages discovered on Friday included Democratic US Senator Cory Booker of New Jersey, former US Director of National Intelligence James Clapper, Democratic US Senator Kamala Harris of California, and Democratic donor Tom Steyer. Cesar was arrested this morning in Plantation, FL close to a packaging facility where the packages were sent out of.
Earlier today, two more packages were discovered in Florida and NY, bringing the total to 12 this week. He also studied at the University of North Carolina-Charlotte, for one year in the mid-1980s and played soccer at the school, a spokeswoman for the university said.
A man named Dre, a manager at a used vehicle dealership next door to the AutoZone, said he heard a loud noise that sounded like an explosion shortly after 11 a.m. "I opened the door and saw the Federal Bureau of Investigation there". She said she did not know why he departed the school early.
Florida Governor Rick Scott said he had been briefed on developments in the investigation.
Turkish employees of Saudi consulate give statements in Khashoggi probe
They are said to have threatened him with being drugged and kidnapped and then killed him in a chokehold when he resisted. The images contradict Saudi's admission on Saturday that the writer died inside the consulate during a "fistfight".
All the people targeted by the suspicious packages have been maligned by right-wing critics.
On Twitter, the 56-year-old Sayoc trafficked conspiracy theories and ranted about liberal billionaire George Soros, former president Barack Obama and former secretary of state Hillary Clinton, as well as others whose politics were out of line with his.
The van that federal agents are investigating in connection with package bombs that were sent to high-profile critics of Trump is transported on a flatbed tow truck. Lowy, who represented Sayoc, said he showed no ability at the time to back up his threat with bomb-making expertise.
One key question authorities are asking is why none of the apparent bombs detonated, a law enforcement source said, raising questions about the skill and motive of the bombmaker.
Meanwhile, investigators were analyzing the innards of the crude devices to reveal whether they were meant to detonate or simply sow fear just before Election Day. He is scheduled to appear in federal court on Monday in Florida.
None of the devices exploded.
The packages were mailed in manila envelopes with bubble wrap, and had a return address of "DEBBIE WASSERMAN SHULTZ", [sic] referring to the Florida congresswoman and former DNC chair, CNN reported.
Last Friday, the authorities arrested Sayoc, alleging in a criminal complaint that he was responsible for sending at least 13 potential explosive devices to prominent Democratic and media figures across the country in recent days - including Mr Obama, Mrs Clinton, Mr Soros, former attorney-general Eric Holder, Representative Maxine Waters and others.