Updated 20:10
A man has been arrested in connection with a series of mail bombs in the US, officials have confirmed.
A total of 13 packages containing potential explosive devices have been found over the past week, sent to prominent Trump critics such as Hilary Clinton, Barack Obama, Joe Biden, billionaire philanthropist George Soros, and actor Robert De Niro.
A Justice Department spokesperson initially confirmed one person was in custody, with officials later saying the arrest was in Florida.
FBI Director Christopher Wray confirmed the suspect's name as Cesar Sayoc, explaining that a fingerprint was identified on an envelope containing one of the devices.
Mr Wray added that the pipe bombs were 'not hoax devices'.
We can confirm one person is in custody. We will hold a press conference at the Department of Justice at 2:30pm ET.
— Sarah Isgur Flores (@whignewtons) October 26, 2018
US Attorney General Jeff Sessions said the suspect has been charged with five federal crimes - including illegal mailing of explosives, and threats against former presidents and officials.
He added that, if found guilty, the suspect could face up to 58 years in prison.
Speaking at the White House earlier, President Donald Trump confirmed a man had been arrested.
President Trump said: "These terrorising acts are despicable and have no place in our country.
"I've instructed authorities to spare no resource or expense in finding those responsible and bringing them to swift and certain justice."
Meanwhile, photos shared on US media showed FBI agents hauling away a van in Florida.

This frame grab from video provided by WPLG-TV shows FBI agents covering a van after the tarp fell off as it was transported from Plantation, Fla., on Friday. Picture by: AP/Press Association Images
Packages
It comes after two more suspicious packages were discovered earlier today, addressed to prominent critics of President Donald Trump.
The FBI today confirmed they had found another package in Florida - this time addressed to Democratic Senator Cory Booker.
The #FBI has confirmed an 11th package has been recovered in Florida, similar in appearance to the others, addressed to Sen. Cory Booker.
— FBI (@FBI) October 26, 2018
In New York, meanwhile, police confirmed they were responding to reports of another package in Manhattan.
CNN reported that the package - which was found at a postal facility - was addressed to the network and former US director of national intelligence James Clapper, a CNN contributor.
Mr Clapper told the network: "My wife and I are away from home right now. And our neighbors have been retrieving our mail. Been very concerned about them.
"So in one sense, it’s kind of a relief, but it’s not a surprise. This is definitely domestic terrorism. No question about it in my mind."
We are responding to a report of a suspicious package in the vicinity of West 52nd Street and 8th Avenue, #Manhattan. Please avoid the area and expect a police presence and heavy traffic. More information to follow. pic.twitter.com/fygm9IvS63
— NYPD NEWS (@NYPDnews) October 26, 2018
According to the FBI, all envelopes had return address labels with the misspelled name of Florida Democratic politician Debbie Wasserman Schultz.

Image: FBI
Officials are urging members of the public to not 'touch, move or handle' any packages resembling those discovered so far - with officials warning that there could still be other devices 'in transit'.