Here's what is known about the bombs sent to high-profile Democrats and critics of President Donald Trump, as well as the man suspected of mailing them:
— Federal authorities announced Friday that one suspect, Cesar Sayoc, 56, of Aventura, Fla., had been arrested in connection with mailing 13 explosive devices.
— Sayoc has been charged with five federal crimes including illegally mailing explosives and making threats against former presidents. He faces up to 48 years in prison if found guilty, U.S. Attorney General Jeff Sessions said.
— Authorities are still investigating whether other people were involved in mailing the crude pipe bombs and did not rule out the possibility of further arrests.
— FBI Director Christopher Wray told a news conference Friday that fingerprints found on one of the packages had led investigators to Sayoc. He said possible DNA evidence was found on another package.
— Sayoc has a lengthy criminal past, including once making a bomb threat. His social media accounts show posts that denigrate Democrats and praise Trump.
— The packages, each containing PCV pipe, a small clock and potentially explosive material, were addressed to prominent Democrats including former President Barack Obama, former Vice President Joe Biden and former Secretary of State Hillary Clinton.
— None of the packages have exploded and no one has been hurt by the mailings, which have stoked nationwide tensions ahead of November elections.
— Trump vowed Friday that those responsible for mailing suspicious packages would be prosecuted to the "fullest extent of the law."
— The first bomb was delivered Monday to the New York suburban home of billionaire George Soros, a major donor to the Democratic Party.