The statement was accompanied by an image of a masked suspect wearing gloves and a hooded sweatshirt, carrying an object.

The FBI is offering a reward of up to $50,000 USD for information on who placed pipe bombs in the committee headquarters of U.S. political parties in Washington.

Residents on Winniett Street have since returned to their homes and the street has reopened following reports of homemade explosives in the area.

Sayoc earlier this year had pleaded guilty to explosives charges for mailing 16 pipe bombs days before the midterm elections last fall.

A Florida man who pleaded guilty to sending pipe bombs to CNN and prominent critics of President Donald Trump says he thinks he was misunderstood at his guilty plea.

The man suspected of sending the bombs kept a list of elected officials and others who investigators believe were intended targets.

CNN explained that it is unclear if the package is related to the series of pipe bombs mailed out to prominent Democrats and the CNN New York office last week.

Thirteen years ago, U.S. mail bomb suspect Cesar Sayoc never expressed racism or homophobia -- but that changed over the years.

U.S. President Donald Trump said in a rally Friday night that the media has used the mail bomb scare which unfolded over this past week to score political points against him.

Hours after federal authorities arrested Cesar Sayoc in Plantation, Florida, his social media posts began to offer the first sketch of the man suspected of sending pipe bombs to critics of Donald Trump.