Mail bomb investigators check Florida leads, say US media
https://www.bbc.com/news/world-us-canada-45986664
Suspected explosive devices mailed to high-profile US figures may have been sent from Florida, according to media reports.
Unnamed officials told outlets that investigators believe at least one package originated there.
But FBI Assistant Director William Sweeney would not confirm these reports during a news conference on Thursday.
Ex-Vice-President Joe Biden and actor Robert De Niro were the latest targets.
Similar packages have also been sent to former President Barack Obama and former Secretary of State Hillary Clinton, among others.
Investigators are eyeing southern Florida in particular, the New York Times reported, saying it had spoken to two people familiar with the matter.
At Thursday's news conference, officials said they could not give any details because it could affect the ongoing investigation.
However Mr Sweeney did confirm that the white powder found in one of the packages - delivered to CNN and addressed to former CIA director John Brennan - "did not present a biological threat".
Mr Sweeney said thorough examinations of all the packages are under way at the FBI laboratory in Quantico, Virginia, outside Washington DC.