Several pipe bombs may have been mailed from Florida: reports

Federal authorities investigating the mailing of pipe bombs this week to multiple prominent Democrats reportedly believe that the devices were sent from Florida.

Two people briefed on the matter told The New York Times that increased attention is being paid to the area as three more devices were discovered on Thursday.

FBI Assistant Director William Sweeney during a press briefing in New York on Thursday afternoon declined to comment on the reports linking the explosives to Florida. 

He said he would not comment on where they were sent from as authorities continue to investigate the packages.

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Sweeney also did not answer questions about which packages were hand-delivered and which went through the Postal Service.

Two of the latest packages were sent to former Vice President Joe BidenJoe BidenTrump to hold campaign rally in Michigan Castro hits fundraising threshold for December debate Buttigieg draws fresh scrutiny, attacks in sprint to Iowa MORE, who has feuded with President TrumpDonald John TrumpTrumps light 97th annual National Christmas Tree Trump to hold campaign rally in Michigan 'Don't mess with Mama': Pelosi's daughter tweets support following press conference comments MORE in the past and is considering a 2020 presidential run, while one was sent to actor Robert De Niro, who has vocally criticized the president.

The FBI has said the packages and devices sent to Biden and De Niro were similar to those addressed earlier this week to Democratic mega-donor George Soros, former Secretary of State Hillary ClintonHillary Diane Rodham ClintonTrump to hold campaign rally in Michigan Saagar Enjeti ponders Hillary Clinton's 2020 plans Political ad spending set to explode in 2020 MORE, former President Obama, former Attorney General Eric HolderEric Himpton HolderThe shifting impeachment positions of Jonathan Turley Pelosi refers to Sinclair's Rosen as 'Mr. Republican Talking Points' over whistleblower question Krystal Ball: Billionaires panicking over Sanders candidacy MORE, former CIA Director John BrennanJohn Owen BrennanKrystal Ball: Yang's MSNBC boycott shows network has 'officially lost the left' Trump predicts 'historic' conclusions from DOJ's watchdog report on 'spying' Trump bemoans 'double standard' in Stone conviction MORE and Rep. Maxine WatersMaxine Moore WatersDemocrats could introduce articles of impeachment next week What are not criteria for impeachment? Fed's top regulator takes heat from both parties MORE (D-Calif.).

Sweeney said during the briefing Thursday that bomb squads have been treating the devices as "live," but declined to say whether the devices were actually capable of exploding.

The devices are currently being investigated at the FBI lab in Quantico, Va. 

The FBI official said a white powder included in some of the packages, including the one sent to CNN's offices in New York that was addressed to Brennan, was "not biological." 

Authorities have said that several of the packages had a return address listed as a Florida office for Rep. Debbie Wasserman SchultzDeborah (Debbie) Wasserman SchultzOn The Money: Trump signs short-term spending bill to avoid shutdown | Pelosi casts doubt on USMCA deal in 2019 | California high court strikes down law targeting Trump tax returns Wasserman Schultz makes bid for House Appropriations Committee gavel Overnight Defense: Erdoğan gets earful from GOP senators | Amazon to challenge Pentagon cloud contract decision in court | Lawmakers under pressure to pass benefits fix for military families MORE (D). The former Democratic National Committee chairwoman has denounced her name being used on the packages.

None of the devices discovered so far exploded and no injuries have been reported.

The packages have sparked a national conversation over the divisiveness of America’s current political rhetoric and a bipartisan call for both sides to ease tensions.

“This is a political year, it’s a political season. We are weeks from an election, and that’s obviously in the air and that’s an obvious fact," New York Gov. Andrew Cuomo (D) said Wednesday. "But we’ve been through many political seasons and we have political differences and that’s actually good for democracy."

Cuomo spoke during a briefing on the package sent to Brennan, which forced the evacuation of CNN's offices on Wednesday.

Trump has condemned the suspected explosive devices and issued a call for unity on Wednesday.

"We have to come together and send one very clear, strong, unmistakable message that acts or threats of political violence of any kind have no place in the United States of America,” Trump said at a White House event.

--Updated at 4:10 p.m.