Century City-based Creative Artists Agency confirmed that it evacuated its staff from its headquarters on Thursday at around noon, after receiving a security threat.
"While the threat is being investigated for its credibility, out of an abundance of caution, we are closing the Los Angeles offices," said a note sent to employees.
The agency said the office will reopen on Friday and did not provide any details about the nature of the threat.
The evacuation was first reported by the Hollywood Reporter.
CAA represents top acting, filmmaking and writing talent in Hollywood. Its clients include George Clooney, Brad Pitt and Lady Gaga.
This story originally appeared in Los Angeles Times.