NEW YORK

CNN's New York offices were evacuated Thursday night after a bomb threat, but no explosive was found and police later gave the all clear, the network said.

The roughly 90 minute drama recalled a similar evacuation in October after an explosive device was discovered at CNN's New York headquarters.

Fire alarm bells rang inside the newsroom to signal an evacuation shortly after 10:30 pm, CNN said on its website, as the network went to pre-taped programing.

An hour later the network was broadcasting from Skype.

"People just tuning in wondering why you're seeing me on Skype, why there's such technical difficulties, it's because we have been taken off the air because a bomb threat was called in to CNN," said host Don Lemon.

Page 1 of 2