THE pipe bombs sent to CNN's studios, Hillary Clinton's New York home and Barack Obama's DC residence this morning were reportedly packed with shards of glass.
The 'rudimentary but viable' devices were discovered one day after a suspicious package was sent to anti-Brexit billionaire George Soros.
The Secret Service says the package was identified during routine mail screening procedures at the Clinton home early this morning.
Hillary Clinton was campaigning for the Democrats in Florida when the "functional explosive device" was sent to her home, but her husband Bill was at the targeted home in Chappaqua, New York.
A similar device was also sent to the Washington D.C. home of Barack Obama.
An image purportedly showing the device sent to the CNN building later surfaced online and appears to have a parody Isis flag on it.
Police later found two more suspicious packages addressed to Democrat Maxine Waters.
They were also reportedly looking into a package that may have been sent to former vice president Joe Biden but was misaddressed.
What we know so far:
- At least eight suspicious parcels were intercepted before reaching any intended recipients
- FBI discovered mail bombs addressed to Hillary Clinton, Barack Obama, former CIA director John Brennan and former Attorney General Eric Holder
- They confirmed two additional suspicious packages, both addressed to Rep. Maxine Waters, have also been found
- Security officials have revealed they were packed with shards of glass
- The pipe bomb sent to CNN appears to include an Isis parody flag
- Far-right terrorists are feared to be behind the pipe bombs sent to Trump’s critics
- Former CIA Director John Brennan says he may have been targeted because he's a strong Trump administration critic
- President Donald Trump said "acts or threats of political violence have no place in the United States".
The picture showed a black and silver cylinder with wires poking out from underneath what looked like black taping.
A mock flag on it appears to be one that used on the right-wing corners of the internet as a meme since 2014.
It replaces Arabic characters with silhouettes of three women and the words “Get ‘Er Done” — which is the catchphrase of stand-up comic Larry the Cable Guy.
Devices were also reportedly sent to New York Governor Cuomo and the Florida office of ex-DNC chair Debbie Wasserman Schultz.
The Secret Service says neither Clinton nor Obama received the packages, and neither was at risk of receiving them because of screening procedures.
It was earlier reported that a similar package was sent to the White House but later turned out not to be suspicious.
Speaking at a press conference in Florida, Hillary Clinton said: "We are fine thanks to the men and women of the Secret Service who intercepted the package addressed to us long before it made its way to our home.
"It is a troubling time, isn't it?"
White House spokeswoman Sarah Huckabee Sanders said in a statement: "These terrorising acts are despicable, and anyone responsible will be held accountable to the fullest extent of the law.
"The United States Secret Service and other law enforcement agencies are investigating and will take all appropriate actions to protect anyone threatened by these cowards."
Donald Trump Jr echoed the White House response tweeting: "As someone whose family has directly been the victim of these mail threats I condemn whoever did this regardless of party or ideology.
"This crap has to stop and I hope they end up in jail for a long time. "
Vice President Mike Pence tweeted: "We condemn the attempted attacks against fmr Pres Obama, the Clintons, @CNN & others.
"These cowardly actions are despicable & have no place in this Country.
"Grateful for swift response of @SecretService, @FBI & local law enforcement. Those responsible will be brought to justice."
The president backed up his VP's sentiments retweeting his response adding: "I agree wholeheartedly!"
Bill and Hillary's daughter Chelsea added: "Every day, I am grateful to the women and men of the United States Secret Service. Thank you."
CNN was also forced to evacuated its office in the Time Warner centre in New York City during a live broadcast.
The network had to interrupt a segment on the devices sent to Obama and the Clintons after they also discovered pipe bomb in their mail.
The device sent to CNN was reportedly addressed to former CIA director John Brennan who regularly appears on the network.
CNN's Evan Perez described the mailed suspicious packages as apparently "rudimentary but functional" and contained what appeared to be a metal pipe with wires protruding from it.
The New York Police Department's bomb squad "believes they have this under control" but has begun evacuating other media outlets in the city.
BLAST WARNING What is a pipe bomb?
A PIPE bomb is an improvised explosive device made by stuffing explosives inside a pipe.
The bombs are popular among terrorist organisations around the world because they are relatively easy to make.
The containment provided by the pipe means that simple low explosives can be used to produce a relatively large explosion due to the pressure provided by the pipe.
The pipe itself can also create potentially lethal shrapnel as it shatters in the blast.
In a statement, the Secret Service said it “has intercepted two suspicious packages addressed to Secret Service protectees,” who were identified as Clinton and Obama.
The statement added: "The Secret Service has initiated a full scope criminal investigation that will leverage all available federal, state, and local resources to determine the source of the packages and identify those responsible."Down south in Florida the offices of the former Democratic National Committee Chair Debbie Wasserman Schultz were also evacuated over a suspicious package.
Police in city of Sunrise said they responded to the address of the office of the Democratic rep for Florida's 23rd congressional district.
The San Diego Police Department has also closed a street outside the Union Tribune newspaper and the entire building has been evacuated.
The news comes a day after a similar device was sent to billionaire George Soros' home.
Soros, a philanthropist who made his money through financial speculation, has become a frequent target for criticism by American right-wing groups due to his support for liberal causes.
He was also a large donor to the Democrats during the presidential campaigns of Barack Obama and Hillary Clinton.
Both the Clintons and Sorors live in wealthy Westchester county.
An official told the Associated Press investigators believe the explosives are linked to one found at the liberal billionaire's compound.
The device sent to Soros' home was made from a length of pipe about six inches long filled with explosive powder, and it was “proactively detonated” by bomb squad technicians, according to the New York Times.