Police officers stand in front of property owned by former Secretary of State Hillary Clinton and former President Bill Clinton in Chappaqua, NY, Oct 24, 2018. (SETH WENIG / AP)
Former US President Barack Obama and former Secretary of State Hillary Clinton were among the targets of suspected package bombs delivered to several high-profile Democrats and CNN in what NewYork officials on Wednesday called an act of terrorism.
At least eight suspicious parcels were intercepted before reaching any intended recipients, including Obama's attorney general, Eric Holder, former CIA Director John Brennan and prominent Democratic Party donor George Soros
At least eight suspicious parcels were intercepted before reaching any intended recipients, including Obama's attorney general, Eric Holder, former CIA Director John Brennan and prominent Democratic Party donor George Soros.
Two packages were sent to California Congresswoman MaxineWaters, the FBI said.
Investigators were trying to track down a suspicious package they believe was addressed to Obama's vice president, Joe Biden, a federal official told Reuters late on Wednesday.
None of the eight packages detonated, and nobody was hurt.
There was no immediate claim of responsibility.
But news of the threats heightened tensions in a nation deeply polarized ahead of elections on Nov 6 that will decide whether Democrats take control of one or both houses of Congress from Republicans and deny President Donald Trump the majority his party now holds in both.
President Donald Trump told a political rally in Wisconsin his government would conduct "an aggressive investigation."
"Any acts or threats of political violence are an attack on our democracy itself," Trump said. "We want all sides to come together in peace and harmony."
But he said the media has a responsibility "to stop the endless hostility and constant negative and oftentimes false attacks and stories."
READ MORE: Explosive devices sent to Obama, Clintons; CNN evacuated
Former Secretary of State, Hillary Clinton speaks on behalf of congressional hopeful Donna Shalala during a campaign stop at the Coral Gables Woman's Club, Oct 24, 2018 in Coral Gables, Fla. (MIAMI HERALD VIA AP)
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The first package, which turned up on Monday, was addressed to Soros, the billionaire financier and frequent target of right-wing conspiracy theories.
The parcel intended for Holder ended up rerouted to the return address printed on all five packages - the Florida office of US Representative Debbie Wasserman Schultz, who formerly chaired the Democratic National Committee, according to the Federal Bureau of Investigation.
The FBI said late on Wednesday it had confirmed that two additional packages, similar in appearance to the others, were addressed to US Representative Waters, a veteran Democratic congresswoman from Los Angeles and also an outspoken Trump critic.
An earlier FBI statement said the other packages consisted of a manila envelope with a bubble-wrap interior containing "potentially destructive devices." Each bore a computer-printed address label and six "Forever" postage stamps.
Other officials said the devices contained in the envelopes were all similar to one found in the mailbox of the Soros home and later detonated by police. At least one bomb was packed with shards of glass, one federal source said.
The US Secret Service intercepted packages addressed to Obama at his Washington home and to Clinton, the 2016 Democratic nominee for president, at her home in New York state.
The CNN bureau in New York also received a package addressed to Brennan, who has appeared as an on-air CNN analyst, leading police to evacuate the Time Warner building in a busy Manhattan neighborhood near Central Park.
The package to Clinton was found late on Tuesday while the one addressed to Obama was recovered early on Wednesday, both during routine off-site mail screenings, the Secret Service said. Obama and Clinton were not at risk, they said.
The package sent to CNN also contained an envelope of white powder that experts were analyzing, Police Commissioner James O'Neill said.
"So far the devices have been what appeared to be pipe bombs," John Miller, the New York City police deputy commissioner for intelligence and counterterrorism, told a news conference.
"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.
This May 25, 2016 file photo shows the home of former President Barack Obama and first lady Michelle Obama in Washington. (ANDREW HARNIK / AP)
All of the targets are frequently maligned by right-wing critics. Trump has repeatedly criticized CNN as "fake news" and disparaged the mainstream news media as an "enemy of the people."
"There is a total and complete lack of understanding at the White House about the seriousness of their continued attacks on the media," CNN President Jeff Zucker said in a statement read on CNN. "The president, and especially the White House press secretary, should understand that their words matter. Thus far they have shown no comprehension of that."
US Democratic leaders in Congress said Trump's call for unity rang "hollow" because of his past statements condoning acts of violence.
"Time and time again, the president has condoned physical violence and divided Americans with his words and his actions," Senate Democratic Leader Chuck Schumer and House of Representatives top Democrat Nancy Pelosi said in a statement.
Last week, Trump, who has joined other Republicans in accusing Democrats of encouraging "mob" tactics, heaped praise on a Montana congressman who assaulted a reporter in 2017.
"Any guy that can do a body-slam ... is my guy," Trump told supporters at the rally.
Brennan at an event in Austin, Texas on Wednesday also faulted Trump for frequent inflammatory rhetoric, saying the president "too often has helped incite some of these feelings of anger, if not violence, when he points to acts of violence."
"He should not be beating the tom-toms of anger and animosity and war," said the former CIA chief, whose security clearance was revoked by Trump after he criticized the president’s summit earlier this year with Russian President Vladimir Putin.
Trump at the Wisconsin rally called attention to "how nice I’m behaving tonight. “Have you ever seen this? We’re all behaving very well and hopefully we can keep it that way, right?"
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