CNN security and the NYPD searched the building and no explosives were found.
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Employees were then let back in.
According to police, someone phoned in a threat stating there were five bombs placed throughout Time Warner Center.
CNN said several fire alarm bells signaling an evacuation rang inside its newsroom shortly after 10:30 p.m.
In a tweet, CNN's Brian Stelter said the office had been evacuated and that CNN was airing taped programming.
In October, the building was partially evacuated after a suspicious package containing a crude pipe bomb was delivered to the company.
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Columbus Circle and West 58th Street between 8th and 9th Avenue was closed to vehicle and pedestrian traffic while police investigated.
(The Assocaited Press contributed to this report.)
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