Authorities intercepted all parcels before they were delivered to their planned destinations. None of the bombs exploded and nobody was hurt.
Authorities intercepted at least 14 parcels, officials said. They were addressed to:
John Brennan: According to New York Police Commissioner James O'Neil, an "explosive device" was addressed to the former CIA director and delivered by courier to CNN's offices at the Time Warner Center in New York. It was discovered on Wednesday morning.
Actor Robert De Niro: A suspicious package sent to him in Manhattan, where his production company is based, was reported to police on Thursday. It has similarities with the other tube bomb packages, it said.
Former Vice President Joe Biden: Two packages were intercepted at post offices in Delaware. The authorities reported on Thursday their discovery.
Democratic US Senator Cory Booker : A package addressed to Booker's office in Camden, New Jersey, was found in Florida and is similar to that of others, the FBI said on Friday  Former Director of National Intelligence James Clapper : A parcel addressed to Clapper and CNN was found in a New York post office, a law enforcement official said Friday.
Democratic US Senator Kamala Harris : A suspicious package addressed to Senator was found in Sacramento, California, a law enforcement official said Friday. An FBI agent said that it seems to be related to the other packages.
Democratic Donor Tom Steyer : A suspicious package, addressed to Steyer, was found in Burlingame, California, officials said Friday. Law enforcement officials said the suspect sent the package
What are the details of the arrest?
FBI agents used lightning bolts to arrest Sayoc and arrested him near Plantation in an AutoZone store a law enforcement officer. He was initially cooperative and told the investigators that the pipe bombs did not hurt anyone and that he did not want to hurt anyone, the official added.
A white van – adorned with images of Trump and Vice President Mike Pence and a "CNN Sucks" sticker – was planted in Plantation Friday to Miramar, FL, where an FBI field office is located. The officer said Sayoc had been kicked out by his parents and was living in the van.
Later he kept a lawyer, so that the police questionnaire was discontinued.
Investigator suspected Sayoc of making bombs inside the van, said two law enforcement sources. They found soldering equipment, stamps, envelopes, paper, a printer and powder, they said.
Angela Fiore, owner of a real estate management firm in Miramar, told CNN she sees a huge presence of law enforcement agencies – the FBI; the Bureau of Alcohol, Tobacco, Firearms and Explosives; Police and sheriff officers – at a nearby parking lot on Friday morning.
"We see it in the news, all those packages that were sent to these Democrats, and then it's suddenly across the street from us," Fiore told CNN.
DNA found on at least one of the packages helped investigators identify Sayoc and investigators were also able to track him using his cell phone, law enforcement officials said.
FBI Director Christopher Wray said a latent print on an envelope sent to California Congressman Waters came from Sayoc
US Attorney General Jeff Sessions said Sayoc is currently facing five charges: Interstate Transportation of an Explosive , illegal mailing explosives, threats against former presidents and other people, threats to interstate communications and attack on current and former federal officials. He faces imprisonment of up to 48 years
. Monday in Miami in front of a federal judge.
Sayoc was not yet aware of the Secret Service, law enforcement agencies reported, but Florida records show a series of arrests from the early 1990s.
Noteworthy was a 2002 arrest in which the police alleged that Sayoc threatened to bomb the Florida Power and Light Co., saying "it would be worse than 9/11."
Online state records describe the offense as a "bomb threat" and "threatening to unload destructive devices". They show that Sayoc pleaded guilty and was sentenced to one year probation. There is also a note that the decision is withheld.
The records show a total of eight arrests for criminal offenses, including theft, battery, fraud and drug possession, as well as probation violations. He was arrested in 2014 and later pleaded guilty to stealing copper pipes in a home depot.
The appraisal of each of the arrests could not be determined immediately from the summary of the Florida Department of Law Enforcement offenses.
Where did the packages come from?
Several of the parcels went through a US Postal Service in Opa Locka, Florida, said two Law enforcement officials who were familiar with the investigation.
"Some were obviously in the postal system," said William Sweeney, deputy director of the New York FBI office, on Thursday. "I'll leave it at that."
The Miami-Dade Police Department tweeted that their bombing squad and K-9 unit provide support for federal affiliates in the Grandpa Locka Mail facility.
Do the packages have similarities?
The federal complaint against the suspect said: "Each of the … (improvised explosive devices) was largely similar in design and construction, each consisting of about six inches of PVC pipe, a small clock, a battery, wiring and energetic material Some of the mailings contained photos of target recipients marked with a red "X."
Wray described energetic material as "essentially potential explosives and materials that produce heat and energy through reaction to heat, shock, or friction
The devices sent to Soros, Brennan and the top Democratic officials appeared to be tube bombs, said FBI Special Agent Bryan Paarmann, responsible for the New York Anti-Terrorist Division.
A first study shows that they are rudimentary but functional and have a similar one Construction. At least one contained projectiles, including broken glass, said a law enforcement official CNN.
The packages were inside Manila envelopes with bubble wrap inside, the FBI said, and each package had six American flag Forever stamps on the envelope. The devices had suspicious-looking packaging, and at least one had a timer for a few dollars on the Internet, which should be easily detected when it was shipped or delivered.
Were the tube bombs designed to go out?
The presence of something believed to be a pyrotechnic powder prompted the investigators to believe that they could explode, but it appeared that the packages were being handled and moved through the postal system without an explosion.
Based on an X-ray image of one of the devices, it appeared to be present with hazardous materials, said Anthony May, a retired ATF explosives investigator, CNN Brooke Baldwin. But it also seemed to lack a crucial component for a functioning explosive device.
"What I do not see is enough to initiate this device, whether by design or by accident, I do not see it." he said. "When I go to design (when) it's designed that way, then the individual's motivation was just to spread fear, infuse fear."
Wray said during a press conference on Friday: "Although we are still there. When we analyze the equipment in our lab, it's not hoax equipment."
Where are the packages now?
The devices will be sent to Clinton, De Niro, Obama, the CNN offices, and Waters' East Coast Office with either the FBI or the agency's lab in Quantico, Virginia. A controlled detonation was carried out on the device sent to Soros, while the device sent to Waters' West Coast Office was taken to safety by a bomb squad.
It's unclear where the others are.
A suspected white powder found in an envelope along with the device sent to Brennan and CNN was tested and found to be non-anthrax or other known agents. Additional tests will be done in the next few days.
CNN's Dakin Andone, Marlena Baldacci, Jason Hanna, Shimon Prokupecz, Mary Kay Mallonee, Evan Perez, and Hollie Silverman all contributed to the report.