Florida Man Charged Over Bombs Mailed To Trump Critics

The man arrested in connection with more than a dozen suspicious packages sent to prominent Democrats and others has been charged with five federal crimes.

Cesar Sayoc faces up to 58 years in prison if found guilty, US Attorney General Jeff Sessions told a press conference on Friday.

"We will not tolerate such lawlessness, especially political violence," he said.

FBI agents arrested Sayoc, 56, in Plantation, Florida, and also hauled away a white van plastered with pro-Trump stickers, the slogan "CNN SUCKS" and images of Democratic figures with red crosshairs over their faces.

Cesar Sayoc is the suspect in at least 13 suspicious packages sent to prominent Democrats and others. Image: Broward County Sheriff

FBI Director Christopher Wray told the news conference that fingerprints on a package sent to Congresswoman Maxine Waters were confirmed to be those of Sayoc.

He also said there could be other packages; so far 14 been discovered.

Law enforcement agencies are still investigating whether other people may have been involved in sending the packages.

Sayoc is expected face charges in a federal court in Manhattan after an initial court appearance in Florida.

Five of the improvised devices were recovered in New York.

A multi-agency taskforce at the AutoZone store in Plantation where Cesar Sayoc Jr was arrested. Image: AAP

According to public records, Sayoc is a registered Republican and has been arrested numerous times over the years, including one case in which he was accused of making a bomb threat.

No one claimed responsibility for the parcel bombs addressed to former President Barack Obama and others, which authorities denounced as terrorism.

READ MORE: Explosive Devices Sent TO Clinton, Obama and CNN In 'Act of Terror'

The episode came less than two weeks before US congressional elections that could alter the balance of power in Washington.

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.

Hours after a federal law enforcement official said the investigation's focus on Florida had intensified, police closed roads around an AutoZone parking lot in Plantation where Sayoc was arrested, and helicopters flew overhead.

The devices were believed to have been fashioned from bomb-making designs widely available on the internet, according to a federal law enforcement source.

Bomb experts and security analysts say that based on their rudimentary construction it appeared the devices were more likely designed to sow fear rather than to kill.