A man in Florida was arrested Friday and will be charged in connection with the series of bombs found this week addressed to prominent Democrats.
The man, who officials described as in his 50's, is currently in custody.
Forensic investigators have been going through the packages addressed to former President Barack Obama, former Secretary of State Hillary Clinton, billionaire George Soros, former Attorney General Eric Holder, former CIA Director John Brennan and California Democratic Rep. Maxine Waters.
Two more packages containing explosive devices were discovered today, one in Florida addressed to Sen. Cory Booker and another in New York addressed to former U.S. Director of National Intelligence James Clapper, officials said.
The Department of Justice will hold a press conference at 2:30 p.m. ET.