The FBI has arrested Cesar Sayoc Jr., 56, from Aventura, Florida, over numerous packages authorities say contained explosives, sent via U.S. mail to various public figures, including former U.S. President Barack Obama, former Secretary of State Hillary Rodham Clinton and former director of national intelligence James Clapper.

A representative from the Department of Justice confirmed this morning that an arrest was made, and announced plans to hold a press conference at 2:30 p.m. EST.