Police have arrested 56-year-old Cesar Sayoc in connection with 13 explosive devices sent to prominent Democrats and CNN this week. Attorney General Jeff Sessions confirmed the arrest during a press conference on Friday, while FBI director Christopher Wray detailed how law enforcement officers tracked him down so quickly.

Sayoc was arrested Friday outside an AutoZone in Plantation, Florida. Law enforcement officials also discovered a white van belonging to the suspect, which, according to photos and videos from the scene, was covered in pro-Trump stickers, as well as other decals that appear to depict crosshairs over the faces of several figures who were sent explosive devices, including former secretary of state Hillary Clinton and former president Barack Obama. One decal read "CNN Sucks." CNN, Clinton, Obama, and the other mail bomb targets have been widely vilified by right-wing media, as well as by President Trump. Police towed the van, covered in a blue tarp, away from the AutoZone for investigation.

Sayoc faces five charges, according to the Department of Justice complaint: interstate transportation of an explosive, illegal mailing of explosives, threats against former presidents and certain other persons, threatening interstate communications, and assaulting federal officers. If found guilty on all counts, Sessions said, Sayoc would face up to 48 years in prison1. You can read the complaint in its entirety below.

"Today's arrest doesn't mean we are out of the woods." FBI Director Christopher Wray

While the first device was discovered Monday at the home of philanthropist George Soros, forensic analysis didn’t begin on the packages and the devices themselves until several days later, Wray said in the press conference, as the evidence slowly made its way to the FBI’s forensics labs on total containment vessels, specialized vehicles designed to transport explosive materials. The first to reach Quantico, Wray said, were those sent to Obama and congresswoman Maxine Waters.

The complaint says that the improvised explosive devices in all of the packages were of similar construction, each containing six inches of of PVC pipe, a small clock, a battery, wiring, and so-called energetic material, which refers to explosives that are triggered by heat, shock, or friction. Some of the mailings also contained photographs of their intended recipients with a red X marked over them.

While some far-right commenters this week had framed the wave of mail bombs as “false flags,” dummy devices intended to sow confusion, the Justice Department was emphatic that they were legitimate attempts to harm. “These are not hoax devices,” Wray said.

According to Wray, FBI lab analysts on Thursday gleaned a fingerprint matching Sayoc’s from the manila envelope that contained the pipe bomb intended for Waters. The complaint says that a DNA sample from a piece of the IED inside two of the envelopes possibly matches Sayoc’s, based on a previously collected sample in possession of the Florida Department of Law Enforcement. Officials reportedly then located Sayoc by tracking his cell phone.