Fingerprint & phone keys to ID of suspect

Investigators used DNA and a cellphone to track down the right-wing zealot accused of mailing pipe bombs to prominent Democrats across the country, officials said Friday.

Analysts lifted a fingerprint that belonged to suspect Cesar Sayoc from a manila envelope that contained a pipe bomb intended for U.S. Rep. Maxine Waters (D-Calif ), said FBI Director Christopher Wray.

Authorities also gleaned DNA from two of the devices that matched DNA collected from Sayoc after previous run-ins with the law in Florida, where he lived, Wray said.

Investigators also checked Sayoc's Twitter account and noticed misspellings consistent with words misspelled on the bomb packages.

“The FBI responded with every resource we've got,” Wray said at a news conference. “A threat of this scope and of this magnitude requires all of us working shoulder to shoulder, “

After a nationwide manhunt, authorities tracked Sayoc down after finding his phone number in a Florida mail facility.

They used the cell phone signal to pinpoint Sayoc's location and took him into custody Friday morning at an AutoZone auto parts outlet in South Florida.

Wray cautioned that more bombs could still be out there.

“Today's arrest does not mean we are out of the woods. There may be other packages in transit now and other packages on the way. We need the help of every citizen, law enforcement, everyone we've got, to help with this investigation in the days to come,” said Wray.

Authorities also said it's not yet clear if Sayoc acted alone.

“This is very much an active and ongoing investigation. We do believe we've caught the right guy, but we also know that there is an ongoing investigation, there still work to be done and plenty of unanswered questions,” Wray added.