Several locations in the Washington, D.C., and NY areas and Florida received suspicious packages this week.
Investigators could be seen early Thursday at the US Postal Service facility along Quigley Boulevard in New Castle, where the bomb squad deployed a robot.
Police in New York City have removed a suspicious package sent to a building owned by actor Robert De Niro. The police closed off several blocks around the building that houses the film company and De Niro's restaurant Tribecca Grill.
Democratic Representative Maxine Waters said in a statement on Wednesday that US Capitol Police said that her Washington, DC, office was the target of a suspicious package that was referred to the Federal Bureau of Investigation.
Television footage showed a heavy police presence in the area. The devices stashed in manila envelopes and mailed nationwide targeted top Democrats two weeks before the midterm elections. All the intended recipients are Democrats. The one addressed to Holder ended up at the Sunrise, Fla., office because its address to Holder was incorrect, officials said.
CNN is known for its robust coverage of the Trump administration and for constantly provoking the ire of the president, who succeeded Obama and defeated Clinton in 2016. Authorities warn additional packages could have been mailed to other locations and they're on the lookout today for more.
United States authorities are searching for suspects in the sending of package bombs to high-profile Democrats in what's been called a terrorist act that's raised tensions in a nation already polarised ahead of elections in November.
Saudi king, crown prince make condolence calls to slain journalist Khashoggi's son
Five Turkish employees of the Saudi consulate have also given testimonies to prosecutors, Turkish media reported. Asked by CNN's Van Jones how the crown prince responded to his advice, Kushner said: "We'll see".
Oil sinks 5% on global equities slump, Saudi supply assurances
Distillate inventories were down this week by 2.4 million barrels, compared to a larger expected draw of 1.927 million barrels. However, Saudi Energy Minister Khalid al-Falih said on Monday the country has no intention of cutting back oil supply.
Lucky victor scoops world record-breaking $1.6bn USA jackpot
The buyer of the ticket beat the odds of 1 in 303 million to win the Mega Millions drawing for the largest jackpot in USA history. Powerball will hold its drawing Wednesday night for a jackpot estimated at $620 million or a cash value of $354.3 million.
"We need to come together and send one very clear unmistakable message that threats or acts of political violence of any kind have no place in America".
Other Republican leaders said the same.
All of the targets are frequently maligned by right-wing critics. Trump also often singles out CNN as he rails against the "fake news" media. The mailing address and return address have been edited out of the photo at source. She is the former chairwoman of the Democratic National Committee who was accused by Clinton rivals of secretly helping the party's eventual presidential nominee.
A member of the New York Police Department bomb squad is pictured outside the Time Warner Center in the Manhattan borough of New York City after a suspicious package was found inside the CNN Headquarters in New York, U.S., October 24, 2018.
Former CIA director John Brennan, to whom the CNN bomb was addressed, hit back at Trump's comments, telling him to "stop blaming others" and that his "inflammatory rhetoric, insults, lies, encouragement of physical violence are disgraceful".
The first crude bomb to be discovered had been delivered Monday to the suburban NY compound of George Soros, a liberal billionaire and major contributor to Democratic causes.