The federal police has confirmed that these parcels were similar to the envelopes containing homemade bombs sent Tuesday and Wednesday at the ex-democratic president Barack Obama, the former secretary of State and rival unhappy that Donald Trump in the presidential election of 2016, Hillary Clinton, the ex-minister of Justice of Obama, Eric Holder, member of parliament democratic party of california, Maxine Waters, and CNN. And officials in NY also uncovered a suspicious package Friday at a Manhattan post office addressed to former intelligence director James Clapper.
A New York City police bomb squad has removed a suspicious package from a Manhattan building associated with actor Robert De Niro.
The packages addressed to Biden were intercepted at DE mail facilities in New Castle and Wilmington, according to a law enforcement official who, like others, wasn't authorized to discuss an ongoing investigation publicly and spoke on condition of anonymity.
The episode sparked an outcry from Trump's critics, who tried to pin the blame for the letter bombs on the president, claiming inflammatory rhetoric against Democrats and the press was creating a climate for politically motivated violence.
Court records in Florida listed Sayoc's birthplace as Brooklyn, New York.
"A large part of the anger we see today in our society is caused by the treatment intentionally inaccurate and imprecise traditional media, which I call the +Fake News+", said the president on Twitter.
Law enforcement sources tell the Miami Herald a trail of DNA evidence on either the packages or the devices quickly led investigators to a suspect identified as Cesar Sayoc, a 56-year-old man from Aventura.
The U.S. Secret Service said the package addressed to Clinton was discovered late Tuesday, intercepted at a mail screening facility near her home in a NY suburb where she lives with her husband, former President Bill Clinton.
The packages, containing devices that appear to be explosive devices, began to show up on Monday, starting with billionaire George Soros, a major donor to Democrats and Democratic causes. "Mainstream Media must clean up its act, FAST!"
A law enforcement source said the package addressed to Mr Biden was intercepted at a DE mail facility and was similar to the others.
Bill and Hillary Clinton: One package mailed to their home in NY but intercepted by the Secret Service.
All of the bomber's targets have clashed sharply with Trump at different times, and the spate of unsafe packages intensified the already full-throated political fights two weeks before congressional elections.
Most of those devices showed the presence of a sulfur substance, which could have exploded, a law enforcement official said.
De Niro has been a frequent critic of Trump and used an expletive to condemn the president at the televised Tony Awards last June, receiving a standing ovation.
Clapper, who is a commentator on CNN, called in to the cable network to say on the air, "This is definitely domestic terrorism".
Authorities had intensified their hunt for a serial mail bomber in recent days after suspected explosives were delivered to a string of political figures and others who have publicly criticized President Trump.
Trump said on Friday that news coverage of the suspicious packages had slowed momentum for Republican candidates before the congressional elections.
The package addressed to De Niro, found on the seventh floor of 375 Greenwich St.in New York City's Tribeca neighborhood, was reported to police around 4:45 a.m.
Most of those targeted were past or present US officials, but one was sent to actor Robert De Niro and billionaire George Soros. There is no information that suggests Wasserman Schultz sent the packages.
In turn, Mr Trump has called the former United States vice president "Crazy Joe" and "mentally weak". "It has gotten so bad and hateful that it is beyond description".
In response to the events, Mr Trump decried political violence but also joked about moving to more polite speeches.
"Let's get along", he said at a Wisconsin rally Wednesday night.
You can also see another shot of what appears to be the suspect's van below.