The investigation into this week's wave of suspicious packages focused on southern Florida and a mail sorting facility in the area. He was arrested there at an AutoZone auto parts store, where two witnesses told Reuters they heard a loud blast at the time of the arrest.
Attorney General Jeff Sessions said that, as with any case, the charges may expand or contract.
A booking photo - from August 2015 and obtained by Reuters on October 26, 2018 - shows Cesar Altieri Sayoc in Ft.
"These terrorising acts are despicable and have no place in our country".
Wednesday morning arrived with reports of a pipe bomb sent to Hillary and Bill Clinton's home in Chappaqua, New York, and a similar device intended for former President Barack Obama's office in Washington.
On Friday, officials said two additional packages were found - one recovered in Florida that was addressed to Democratic Sen. Cory Booker was found in Florida, while another found in NY was addressed to former U.S. Director of National Intelligence James Clapper. CNN said the arrest was made in Plantation, a city near Ft.
FBI Director Christopher Wray revealed that he was detained after his fingerprint was allegedly found on one of the packages.
"This last question that I thought Wray gave a very weird answer to when he was asked "when did you tell the White House, when did you tell the president", and [he] wouldn't answer that", said Miller, pointed out that in reality the answer should always be "immediately".
"We will not tolerate such lawlessness, especially political violence", he said at a news conference.
Cesar Sayoc, 56, of Ft.
Mr. Sayoc's Twitter page has also been shut down. MSNBC reported that he was registered as a Republican Party member. Lowy said Sayoc showed no ability at the time to back up his threat with bomb-making expertise.
He also has ties to NY and a criminal history. He also had several arrests for theft in the 1990s. He has also faced charges of fraud and battery.
Court records show Mr Sayoc filed for bankruptcy in 2012 while he was living with his mother. He did not graduate, the spokeswoman added.
United States officials say that DNA evidence was used to track him down.
Federal officials were seen on television examining a white van, its windows covered with an assortment of stickers, in the city of Plantation.
Clinton is pictured as angry with her mouth ajar, a crosshair imposed over her face.
The common thread among the bomb targets was obvious: their critical words for Trump and his frequent, harsher criticism in return.
Trump gave kudos to the FBI, Secret Service, and state and local law enforcement for quickly tracking down Sayoc.
(1830 GMT), a department spokeswoman said. But, the AG was clear in noting that those responsible for the past week's crimes can expect the full extent of the law. "Political violence must never, ever be allowed in America, and I will do everything in my power to stop it". The one discovered at a Manhattan postal facility was addressed to Clapper at CNN's address. Clapper said anyone who has criticized Trump should take extra precautions when handling their mail, adding: "This is not going to silence the administration's critics".