On Friday, Cesar Sayoc was arrested in connection with the 14 pipe bombs sent to top Democrats, other critics of President Trump, and CNN earlier this week. The 56-year-old Sayoc appears to have been active on social media. A Twitter account that prosecutors linked to him praised Trump, threatened top Democrats with death, and shared convoluted ultra-right-wing conspiracies about many of the people to whom he is suspected of sending homemade bombs. Through the same Twitter account, Sayoc also posted photos of the homes of some of those targets, along with threatening messages.

The account linked to the suspect would often repeat the phrase "So you like to make threats" after tagging a Twitter user, then invite them to Florida to take an “air boat” ride and hint at the possibility that something bad could happen to them in the near future. Most of these potentially threatening messages were written using the plural pronouns of “we” and “our” to describe future actions rather than the singular “I” or “my;” the account linked to Sayoc would often refer to him as the “Unconquered Seminole Tribe.”

In the criminal complaint against Sayoc, FBI Special Agent David Brown said he believed Sayoc operated a Twitter account under the name “Cesar Altieri,” with the handle of @hardrock2016.

Rochelle Ritchie, a political commentator who regularly appears on Fox News panels, tweeted Friday that she had reported the account to Twitter after one tweet threatened Ritchie’s life. At the time, Twitter told her that @hardrock2016 did not violate any of its policies, Ritchie said. Twitter removed the Cesar Altieri account Friday after Sayoc was arrested. On Friday evening, Twitter told Ritchie that its previous assessment of the account was “made in error.” Twitter declined to comment. "This is an ongoing law enforcement investigation," a spokesperson said.

The Cesar Altieri Twitter account posted numerous threatening tweets directed at US representative Maxine Waters (D-California), the intended target for two of the mail bombs. Those tweets included screengrabs of news stories about bodies being found in the Everglades, reports of missing people, and illustrations themed around death. In one tweet, Sayoc wrote “@RepMaxineWaters So you like to make threats.We want to invite you down on our land for an air boat ride here Unconquered Seminole Tribe Swamp Everglades.No@loud talk silence see you soon.”

In a tweet directed at @maximewaters, the account linked to Sayoc wrote “See you soon Maxim” and included a photo of what appears to be the representative’s house. The account @maximewaters does not belong to Waters but appears to be a parody account designed to promote popular conspiracy theories about the congressmember.