
The pipe bombs anonymously sent to the addresses of prominent Democrats across the United States each had matching characteristics, law enforcement officials revealed Wednesday evening.

The crude devices were contrived of PVC tubing attached to a digital clock, available for purchase on Amazon. They included sulfur as explosives and shards of glass as shrapnel.

X-ray images obtained by ABC News provide a more detailed look at the explosive devices that also include a battery as well as wiring to initiate an explosion.

Officials suspect a serial bomber likely with an intent to kill is behind the rash of homemade explosives sent in the mail this week.

Law enforcement officials said Wednesday evening the pipe bombs anonymously sent to the addresses of prominent Democrats across the United States each had matching characteristics. An x-ray of the explosive device sent to Barack's Obama's Washington residence is pictured

The crude devices were contrived with PVC tubing attached to a digital clock and included sulfur as explosives and shards of glass as shrapnel. An x-ray of the explosive device recovered at Time Warner Center in NYC is pictured

The digital clock is circled above. Multiple suspected explosive devices were found in the mail addressed to Barack Obama, Hillary Clinton and CNN's New York newsroom on Wednesday. Pictured is the pipe bomb sent to CNN's newsroom

Secret Service agents revealed earlier Wednesday they had intercepted two explosives en route to former President Obama's Washington D.C. home and Hillary and Bill Clinton's property in Chappaqua, New York.

A short time later, a police bomb squad was sent to CNN's offices in New York City and the newsroom was evacuated because of a pipe bomb found in an envelope addressed to former CIA director John Brennan.

The devices were similar to the small pipe bomb found at liberal billionaire donor George Soros' New York home on Monday and appear to have been sent by the same person, NYPD's chief of counterterrorism said.

Throughout the day, a disturbing hashtag that suggests the Trump administration holds responsibility for the pipe bombs became a top trend on Twitter.

Liberal conspiracy theorists took to the social media platform to share countless viral tweets under the hashtag #MAGAbomber, while President Trump in the meantime condemned the attempted act of terror against his greatest foes and called for unity across the nation.

One user wrote in a tweet using the trending hashtag: 'I promise you it will not be long until a crowd of people cheer at a Trump rally for the #MAGABomber.'

Another user said: 'No one could have predicted the #MAGABomber except for literally everyone,' while someone else wrote: '@realDonaldTrump you and your hateful rhetoric are responsible for the #MAGAbomber.'

Someone else suggested: '#MAGAbomber the hashtag fits @realDonaldTrump you must admit.'

Trump spoke about pipe bomb incidents Wednesday at a White House event, where signed an opioid epidemic law that will make medical treatment more readily available to drug abusers and crack down on the mailing of illegal substances.

Trump said in the statement: 'I just want to tell you that in these times, we have to unify... 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 Untied States of America.

'The safety of the American people is my highest and absolute priority. I've just concluded a briefing with the FBI, Department of Justice, Department of Homeland Security and the US Secret Service.

'As we speak, the packages are being inspected by top explosive experts and a major federal investigation is now underway.

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

The #MAGAbomber hashtag began trending on Twitter Wednesday, as Trump called for unity across the nation following the pipe bomb incidents

US President Donald Trump condemned the act of terror against his greatest foes and called for unity across the nation while speaking at a White House event on October 24, 2018 in Washington, DC

Trump speaks about crude pipe bombs targeting Hillary Clinton, former President Barack Obama, CNN and others, during an event on the opioid crisis, in the East Room of the White House on Wednesday in Washington

The FBI said the packages were mailed in manilla envelopes with bubble wrap interior. The packages were affixed with computer-printed address labels and six stamps bearing the Stars and Stripes. All packages had the return address of former DNC chairwoman Debbie Wasserman Schultz in Florida.

The explosive device intended for Holder was returned to her Florida office - also sparking an evacuation there on Wednesday afternoon.

All of those targeted are among Trump's biggest political enemies and have been subjected to his ire on Twitter.

The White House also called the attacks as 'despicable', while officials described the events as a coordinated 'effort to terrorize' just days before polarizing US elections.

'This clearly is an act of terror attempting to undermine our free press and leaders of this country through acts of violence,' New York Mayor Bill de Blasio told a news conference.

The FBI has warned that other packages could also have been mailed and said they were working with multiple agencies to track down the person responsible.

The packages sent to the Clintons and Obama were discovered during routine mail screenings and were intercepted prior to being delivered to Clinton and Obama.

Bill Clinton was at the family's home at the time the package was intercepted, while Hillary was attending campaign events for Democrats in Florida.

Multiple suspected explosive devices were found in the mail addressed to Barack Obama, Hillary Clinton and CNN's New York newsroom on Wednesday. Pictured above is the pipe bomb sent to CNN's newsroom

The FBI said the packages were mailed in manilla envelopes and were affixed with computer-printed address labels with six stamps bearing the Stars and Stripes. The packages had the return address of former DNC chairwoman Debbie Wasserman Schultz in Florida

Two bombs have been found in the mail addressed to former President Barack Obama and former Secretary of State Hillary Clinton, according to the Secret Service

CNN evacuated its New York bureau Wednesday after the pipe bomb together with an envelope containing white powder was found in the mail room of the Time Warner Center where their bureau is located,

The packaging was addressed care of CNN to former CIA director John Brennan, who doesn't work for the network but is an MSNBC contributor. An evacuation alarm went off as CNN anchors were live on air reporting on the packages sent to Obama and Clinton.

The bomb was constructed with a metal pipe, wires and black tape, according to police. The device found at CNN was removed by the NYPD bomb squad and taken away for investigation.

A suspicious package addressed to Democratic California congresswoman Maxine Waters was intercepted by Capitol Police on Wednesday afternoon and another was found en route to her California office.

Earlier, a law enforcement source told Reuters and CNN that they believed a pipe bomb had also been sent to the White House but was intercepted at an off-site facility in D.C. The Secret Service later denied this, saying there was no suspicious package addressed to the White House.

New York Governor Andrew Cuomo said his office received a similar package, but New York police officials said the office was cleared and no device was found. The San Diego office of U.S. Senator Kamala Harris was evacuated early Wednesday following reports of a suspicious package, but police found nothing.

The package sent to Hillary and Bill Clinton's property in Chappaqua, New York was found by an employee who screens their mail. Police guarded the property early Wednesday

A device addressed to former President Obama's home in Washington D.C. was intercepted by Secret Service. Law enforcement were spotted outside the home early Wednesday morning

A short time later, a police bomb squad was sent to CNN's offices (above) in New York City and the newsroom was evacuated because of a suspicious package

A robotic device and members of the bomb squad were deployed outside the building in Sunrise, Florida where Rep. Debbie Wasserman Schultz has an office following reports of a suspicious device

TIMELINE: Packages target prominent Democrats and Trump's foes Monday: George Soros Pipe bomb is found at George Soros' home in Katonah, New York on Monday. It was located in a mailbox outside the gates of the billionaire's compound. Tuesday : Hillary Clinton Suspicious package is discovered at Hillary and Bill Clinton's home in Chappaqua, New York, Tuesday night. The device addressed to Hillary was found during a routine mail screening. Bill was at the home but Hillary was campaigning for Democrats in Florida. Wednesday: Barack Obama Secret Service intercept a package en route to Obama's Washington D.C. residence early Wednesday. It was also discovered during routine mail screenings. Wednesday: CNN/John Brennan Suspicious package addressed to former CIA director John Brennan is found in the mail room of CNN's New York Bureau on Wednesday. CNN evacuated after a pipe bomb and an envelope of white powder was discovered. Brennan has worked as a television analyst. Wednesday: Eric Holder/Debbie Wasserman Schultz Bomb squad is called to Florida office of Congresswoman Debbie Wasserman Schultz on Wednesday after package is found. Packages that were intercepted all had Schultz's office listed as a return address. Package at her office was sent to former Attorney General Eric Holder but was mailed to the wrong address, so was returned to her instead. Wednesday: Maxine Waters Suspicious package addressed to California congresswoman Maxine Waters was intercepted Wednesday afternoon by Capitol Police. Another package was sent to Waters in California. Thursday : Joe Biden Authorities locate two suspicious packages addressed to the former VP at mail facilities in Delaware on Thursday. Thursday: Robert De Niro New York Police swarm a building associated with the Hollywood actor in Tribeca early Thursday after a suspicious package was found. Advertisement

The White House issued a statement regarding the devices, condemning the 'violent attacks'.

'We condemn the attempted violent attacks recently made against President Obama, President Clinton, Secretary Clinton, and other public figures,' a statement from press secretary Sarah Sanders said.

'These terrorizing 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.'

Vice President Mike Pence and Ivanka Trump also issued statements condemning the attacks on Obama, the Clintons and CNN.

'These cowardly actions are despicable and have no place in this country. Grateful for swift response of @SecretService, @FBI & local law enforcement. Those responsible will be brought to justice,' Pence tweeted.

Ivanka tweeted: 'I strongly condemn the attempted acts of violence against President Obama, the Clinton family, @CNN and others. There is no excuse - America is better than this. Gratitude to the @SecretService and law enforcement for all they do to keep this nation safe.'

President Trump initially just retweeted Pence's tweet, saying: 'I agree wholeheartedly!' but expanded during a White House press conference later on Wednesday.

'I just want to tell you that in these times we have to unify, 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.

Trump did not mention any of the recipients of the packages in his remarks.

'The safety of the American people is my highest and absolute priority,' he said.

His wife Melania also spoke, saying: 'We cannot tolerate those cowardly attacks and I strongly condemn all who choose violence.

'I'm grateful to the secret service as well as the federal and local law enforcement for all they do on a daily basis to keep us safe and encourage people across the country to choose kindness over hatred.'

Hillary Clinton said at a Florida fundraiser on Wednesday that 'we are fine' as she thanked the Secret Service for intercepting the device 'long before it made its way to our home'.

Clinton, who was speaking at a fundraiser for Democratic congressional candidate Donna Shalala, said her family was grateful for the Secret Service's 'service and commitment and obviously never more than today'.

The pipe bomb found at CNN was safely taken away in an NYPD emergency vehicle on Wednesday to be examined by the FBI

A member of the New York Police Department bomb squad is pictured outside the Time Warner Center in the Manahattan after a suspicious package was sent to CNN

An evacuation alarm went off as CNN anchors were live on air reporting on the packages sent to Obama and Clinton

New York police block off a street after they were called to a suspicious package sent to the Time Warner building where CNN's newsroom is located

New York Mayor Bill de Blasio told a news conference that it was an 'act of terror'. He is pictured above with New York Governor Andrew Cuomo (right) and New York Police Commissioner James P. O'Neill (left)

With the country deeply polarized under President Trump, the packages brought a new level of tension to the November 6 political contests that will decide whether Democrats can challenge the majorities now held by Trump's Republicans in Congress.

The targets are all Democrats frequently attacked by Trump online and in speeches as he defends his 2016 election victory and policies he has implemented since coming to office in January 2017.

The term #MAGAbomber was trending as the investigation unfolded.

Obama preceded him in the White House and Clinton was his 2016 election rival. Holder was attorney general in the last years of the Obama administration.

Trump has labelled CNN the leading purveyor of 'fake news' against him, and Brennan is perhaps his most damaging critic from the national security community. Brennan called the president's performance during a July joint news conference with Russian President Vladimir Putin in Helsinki 'nothing short of treasonous'.

Trump often ridicules Waters, a senior Democrat, as 'low IQ' and has regularly attacked Wasserman Schultz, the former chairwoman of the Democratic National Committee, and Cuomo.

Alexander Soros, the son of George Soros, said in an opinion piece published by the New York Times that his father had long faced verbal criticism and threats over his involvement in politics, 'but something changed in 2016' when Trump was elected.

'Before that, the vitriol he faced was largely confined to the extremist fringes, among white supremacists and nationalists who sought to undermine the very foundations of democracy. But with Donald Trump's presidential campaign, things got worse,' Alexander Soros wrote.

He placed direct responsibility with those who sent the devices, but added: 'I cannot see it divorced from the new normal of political demonization that plagues us today.'

Hillary Clinton said at a Florida fundraiser on Wednesday that 'we are fine' as she thanked the Secret Service for intercepting the device 'long before it made its way to our home'

Melania Trump strongly condemned the attempted violence to President Trump's political rivals on Wednesday at a White House press conference

At a press conference on Wednesday, New York Mayor Bill de Blasio condemned the 'effort to terrorize' as he and fellow Democrat Andrew Cuomo appealed to all elected officials, including a veiled reference to Trump, to tone down rhetoric.

'Don't encourage violence, don't encourage hatred, don't encourage attacks on media,' de Blasio said. 'Unfortunately this atmosphere of hatred is contributing to the choices people are making.

'The way to stop that is turn back the other way, to bring down the temperature, to end any messages of violence against people we disagree with and this has to start at the top.'

Meanwhile, during Fox News' coverage of the events, former FBI assistant director Chris Swecker told the outlet that the Democrats might be to blame for the bombs.

'We're already seeing a little bit of a pattern,' Swecker said. 'They're going to be looking at this as a potential terrorist motive, whether it's on one side or the other.

'This doesn't necessarily mean someone is espousing some sort of conservative ideology and targeting Democrats. It could be someone who is trying to get the Democratic vote out and incur sympathy.'