CNN is closing its offices to nonessential employees as COVID-19 cases rise nationwide.

Only those employees who are needed to produce shows or perform tasks essential to broadcast operations will be allowed to come in, network President Jeff Zucker said in a memo Saturday.

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"We are doing this out of an abundance of caution," Zucker wrote. "And it will also protect those who will be in the office by minimizing the number of people who are there."

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According to the memo, the network will make changes to its spaces and go back to using “flash studios” that can be operated remotely and using fewer people.

A tentative return date has been set for January, a source told the Wall Street Journal.