(CNN) DNA, fingerprints and pings from a cell phone tower led authorities to an auto parts store parking lot in south Florida where they arrested a 56-year-old man Friday morning. The arrest brought an end to a four-day nationwide manhunt for the alleged mailer of over a dozen suspected pipe bombs to prominent critics of President Donald Trump.

A key break in the case for investigators came Thursday, according to a criminal complaint and multiple law enforcement officials, when they traced five packages to the Opa-Locka processing and distribution center outside of Miami.

That break allowed authorities to narrow their search, which -- combined with DNA and fingerprint samples left on a package sent to Rep. Maxine Waters and cell phone geolocation information -- led to Cesar Sayoc, even as new devices were being found in New York and California.

FBI agents arrested Sayoc at an AutoZone parking lot in Plantation, Florida, about six miles west of Fort Lauderdale, Friday morning as he was nearing his white van, which has been covered with images political in nature, including images of notable liberals such as Hillary Clinton and former President Barack Obama.

A "CNN Sucks" sticker was also on the van. Two of the packages with explosive devices were addressed to the CNN New York bureau.

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