On the internet and in real life, Cesar Sayoc was not shy about broadcasting his support for Donald Trump and his contempt for those the president might consider enemies.

He plastered stickers across his white van supportive of Trump, alongside images of the president’s critics with red targets over their faces and a large decal that read, “CNN sucks.” On Twitter, the 56-year-old trafficked conspiracy theories and ranted about liberal billionaire George Soros, former President Barack Obama, former Secretary of State Hillary Clinton and others whose politics were out of line with his.

“He was crazed, that’s the best word for him,” said Debra Gureghian, the general manager of New River Pizza and Fresh Kitchen in Fort Lauderdale, Fla., where Sayoc worked for several months. “There was something really off with him.”

On Friday, 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 Obama, Clinton, Soros, former Attorney General Eric Holder, Rep. Maxine Waters, D-Calif., and others.

Though officials declined to say what they believe motivated him, court records, his social media and those who know him make clear that Sayoc was troubled and, at least in recent years, deeply partisan. Ronald Lowy, an attorney representing members of Sayoc’s family, said he believed Sayoc was mentally ill and lived out of his vehicle for over a decade.

Sarah Jane Baumgartel, an attorney appointed on Friday to represent Sayoc, declined to comment.

“I think this is a post-Trump sort of enticing somebody who maybe had some deep-seated issues, and this recent political climate seems to be bringing it to the surface with some people,” said Daniel Lurvey, a lawyer who represented Sayoc in the past.

One of Sayoc’s cousins, who spoke on the condition of anonymity, said that Sayoc was “a really good guy who wouldn’t want to hurt anyone,” and that the bombs — which didn’t detonate — were “a hoax.”

“This was his way of getting attention,” the cousin said. “He just wanted to get his opinion out there.”

The cousin said that while he did not know Sayoc to be political, he could intuit his relative’s message.

“He was saying you can’t speak against the president,” the cousin said. “The next guy who says we want to kick them when they’re down, he’s going to learn not to say that.” The cousin said that was a reference to Holder’s quipping at a recent campaign event, “When they go low, we kick them.”

Sayoc, a registered Republican who lives in Aventura, Fla., near Miami, attended Brevard College in North Carolina, where he was a member of the soccer team, according to a school yearbook. He also was listed as a member of the Canterbury Club, a religious organization. A yearbook photo showed him posing behind someone in a bishop’s robe.

Sayoc had worked in recent years as a pizza delivery driver. He claimed in a 2014 deposition that he had been a manager at a strip club called “Stir Crazy,” owner of a dry-cleaning store, a pro wrestler, a Chippendales dancer, a professional soccer player in Milan and an arena football player in Arizona.

That work history, though, seems to have been inflated. Chippendales denied he was ever affiliated with the company. Sayoc also told co-workers that he was an American Indian from the Seminole tribe, that he lived on the reservation, and that he had done work for the Hard Rock Casino. But the Seminole Tribe of Florida, Seminole Gaming and Hard Rock International said they could find no evidence to support that. His cousin said Sayoc’s father is Filipino and his mother Italian.

Lawyer David McDonald, who questioned Sayoc for the deposition, said Sayoc was “glib and articulate,” but also “maybe delusional.”

“He described himself at the center of all these business ventures with all these people. It didn’t seem like it could be true,” McDonald said.