A suspicious package addressed to CNN was intercepted Monday at an Atlanta post office, the head of the cable news network said in a statement.
If it is found to contain an explosive device, it would be the 15th mail bomb -- and the third to CNN -- of a wave addressed to prominent Democrats and critics of US President Donald Trump, allegedly by a Trump supporter in Florida.
"This morning, another suspicious package addressed to CNN was intercepted at an Atlanta post office," CNN Worldwide president Jeff Zucker said in a statement.
"There is no imminent danger at CNN Center," he said in a message to employees that was also posted on Twitter.
Since last Wednesday, all mail to CNN's US offices has been screened at an off-site location, he said, "so this package would not have come directly to the CNN Center, even if it hadn't been intercepted first."