Federal agents searched a U.S. mail facility near Miami on Thursday night in the race to find who sent 10 pipe bombs to prominent Democrats and critics of U.S. President Donald Trump as leads pointed to Florida as the packages' possible origin.
Investigators treated the devices as "live" explosives, not a hoax, said James O'Neill, the police commissioner of New York City, where two of the packages have turned up since Wednesday.
A federal law enforcement source told Reuters the devices were thought to have been fashioned from bomb-making designs widely available on the internet.