Explosive Devices Sent To Clinton, Obama And CNN In 'Act Of Terror'

Packages containing explosives were sent to the home of Bill and Hillary Clinton, the office of Barack Obama and the New York CNN office on Wednesday.

The FBI confirmed on Thursday that two additional packages were also sent to democratic congressional representative Maxine Waters. The suspicious packages addressed to Waters were discovered in a Los Angeles mail facility.

This takes the total number of packages loaded with explosives from five to seven.

Barack Obama, Maxine Waters and Bill and Hillary Clinton did not come into contact with the packages as they were intercepted before their were able to arrive at their designated locations.

"This was clearly an act of terror attempting to undermine the free press and leaders of this country through acts of violence," New York Mayor Bill De Blasio said.

Explosive devices were also sent to the CNN New York Bureau. Image: Twitter/ CNN Breaking News.

CNN reported the package intercepted in its mailroom was addressed to former CIA director John Brennan, an outspoken critic of President Donald Trump and frequent commentator on the network

The package sent to the home of former secretary of state Hillary Clinton and her husband Bill Clinton was intercepted outside their residence in Chappaqua, New York.

NYPD outside the Time Warner Center in Manhattan, NYC. Image: Reuters

The package sent to former president Barack Obama was sent to his office in Washington, the Secret Service said on Wednesday.

The CNN newsroom in New York City was evacuated as a precaution, the network said.

CNN said authorities were treating the device as a real explosive, citing a law enforcement source.

The Time Warner building in New York City was evacuated. Image: Getty Images.

After the evacuation from the Time Warner Center in Manhattan, the network continued to broadcast from outside the building.

"We are working with authorities to determine the severity of the situation," CNN president Jeff Zucker said in a statement quoted by the broadcaster. Zucker said the company was checking other bureaus worldwide for explosives as a precaution.

Former president Bill Clinton was at home when the package sent to his residence was found, according to news reports. Former secretary of state Hillary Clinton was campaigning in Florida.

An explosive package was sent to Bill and Hillary Clinton's home. Image: Getty Images.

The Secret Service, the law enforcement agency that protects current and former US governmental officials, said the packages were identified during routine mail screening procedures.

The Secret Service, along with New York and Washington law enforcement agencies, are investigating to determine who sent the packages, which were similar to one found on Monday at the home of the billionaire philanthropist George Soros in New York.

Soros' foundation on Tuesday linked the packages to "hateful rhetoric" dominating US politics.

A package was also sent to the office of Barack Obama in Washington. Image: Getty Images.

US President Donald Trump said his government will combat the use of political violence and will treat acts like the sending of explosives as a direct threat to the nation.

"My highest duty, as you know as president, is to keep America safe," Trump said at a rally in Mosinee, Wisconsin on Wednesday evening local time.

"Any attacks or threats of political violence are an attack on our democracy itself. No nation can succeed that tolerates violence or the threat of violence as a method of political intimidation, coercion or control ... such conduct must be fiercely opposed and firmly prosecuted. "

Earlier, Trump said the White House is fully committed to finding the people responsible for sending the packages with the FBI, Department of Justice, Department of Homeland Security and the Secret Service all involved in tracking down the perpetrator.

"As we speak the packages are being examined by top explosive experts and a major federal investigation is now underway," Trump said at the White House on Wednesday.

"The full weight of our government is being deployed to conduct this investigation to bring those responsible for these despicable acts to justice."

A major federal investigation into the packages is underway. Image: Getty Images

Trump also urged people to unite in the midst of such attacks against American society and democracy.

"We will spare no resources or expense in this effort and I just want to tell you that in these times we have to unify," he said.

"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 Sates of America. "

Donald Trump's daughter and presidential adviser Ivanka Trump also strongly condemned the attempted attacks.

"There is no excuse - America is better than this," she said on Twitter.

The packages were sent just two weeks for the US mid-term elections, which are due to take place on November 6.

Featured Image: Getty Images/Twitter-CNN Breaking News. 

Contact Siobhan at skenna@networkten.com.au

With AAP.