PLANTATION, Florida -- Federal authorities have arrested one person in Broward County amid an investigation into a dozen suspicious packages that were sent to prominent Democrats nationwide.

The FBI confirms the arrest was made near an auto parts store in Plantation, Florida, which is a little more than six miles west of Fort Lauderdale. Plantation is a less than 15-minute drive from the Sunrise office of Florida U.S. Rep. Debbie Wasserman Schultz, whose name was listed on the return address section of the envelopes containing the potential explosive devices.

The suspect is 56-year-old Cesar Sayok, according to CBS News.

Investigators say they were led to Sayok, in part, through DNA evidence.

Related: Suspicious package mailed to U.S. Sen. Cory Booker intercepted in Florida

Much of the overall federal investigation had shifted to Florida in recent hours after packages were found at a mail facility in Opa-locka.

Authorities are still trying to figure out if the packages were actually meant to explode or just cause fear.

Federal agents and police officers are examining a van in the parking lot of the auto parts store. The van has stickers on its windows, including American flags.

The Department of Justice has scheduled a news conference for 2:30 p.m.

The Associated Press contributed to this report.

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