The man arrested on suspicion of making and sending 12 pipe
bombs to opponents of
Donald Trump is a registered Republican who drove a van plastered with images of the US president's face, and has a long history of criminal behaviour.
Cesar Sayoc, 56, has been arrested at least 10 times, according to the Florida Department of Law Enforcement, once in 2002 for making a bomb threat and most recently in 2015 for a probation violation.
Sayoc appears to have a Facebook profile under the name Cesar Altieri Randazzo, featuring videos and photos of him attending multiple rallies for Mr Trump, including at least one rally in Florida. The account has "liked" more than 100 conservative pages, including several anti-Clinton and pro-Trump groups.
On Friday night it emerged that Sayoc had threatened to blow up his local electricity company, telling a representative “it would be worse than September 11th” if they ever turned off his electricity.
A representative from Florida Power and Light told the Miami police in August 2002 that Sayoc “threatened to blow up” the FP&L building, and threatened the representative.
He was sentenced to one year probation.
Sayoc also used social media to make threats, attacking Parkland shooting survivor David Hogg and sending American Football player Colin Kaepernick a picture of a beheaded goat, saying “see you real soon.”
Sayoc was born in Brooklyn, New York, and went to high school in North Carolina.
He graduated from Brevard College in North Carolina in 1984, according to his LinkedIn profile. The college declined to confirm whether he had attended the school, but Sayoc was on the Brevard College soccer team in 1981 and pictured as part of a Catholic organisation at the school, according to school documents posted online.
His LinkedIn profile described him as a veterinary student at High Point University in North Carolina. The school's registrar's office confirmed that Sayoc had applied, but said he was not currently enrolled.
Sayoc worked as a stripper in the 1990s and was obsessed with bodybuilding, wrestling and steroids, family members said.
One cousin told NBC News he was a “loose cannon” and a “lost soul” who didn’t speak to his family and had a problem with steroids.
“He’s been in the strip clubs since he was 22, that was his life,” the cousin said. “He was a male dancer and he wanted to be a wrestler. He was taking steroids. He was all buffed up. He was built like a rock.”
Tony Valentine, an event promoter in Ohio, said Sayoc was a “big muscle head” who “wanted to be a professional wrestler — that was his dream.”
“He really couldn’t find his niche in life, and I guess he found it now,” Valentine told the Washington Examiner.
“Back in the nineties, he was running around from Minnesota to the Carolinas to Florida. He was like a gypsy.”
In June 1999 he was arrested in North Carolina, on unspecified charges – which were later dropped.
Sayoc has lived in Florida, in the Miami region, for most of his adult life, and his criminal record – mainly in Florida - dates back to 1991, with petty larceny and thefts, including from shops.
In 1994 a woman named Viola Altieri filed a civil complaint against Sayoc for domestic violence. She later filed a request to dismiss the complaint.
In 2004 he was suspected of selling the anabolic steroid testosterone propionate, but charges were dismissed.
In August 2002 his records show an arrest by Miami police for a bomb threat, termed as “threat to throw, place, project or discharge any destructive device”.
In November 2013 he was arrested in Coral Springs, Florida, and subsequently convicted for battery.
He also has multiple notifications for parole violations.
In court documents, he said he had worked as a store manager for a year at a small company called Hassanco Investments Inc in Hollywood, Florida, earning less than $12,000 a year.
He is a promoter, booking agent and "live entertainment owner," according to his LinkedIn profile, which used his middle name, Altieri, and listed him as the owner of International Gold Productions.
He is also registered as a manager at Native American Catering and Vending LLC, and at Ver Tech AG. He is further listed as the president of Proud Native American One Low Price Drycleaning.
In 2006 he bought a $400,000 (£312,000) house in Fort Lauderdale. The house foreclosed in 2009, and by June 2012 he was declared bankrupt, and gave his address as his mother’s home in Aventura, Florida. The bankruptcy was discharged in September of that year. At the time, Sayoc listed a $1,150 tax refund and a 2001 Chevy Tahoe vehicle as his only assets.
For the 2016 election he registered as a Republican at the same Aventura address.
Sayoc was a client, at the time of his arrest, at Auto Zone in Plantation, Florida.