(CNN) For the third time in a week, a suspicious package has been addressed to CNN. This time, on Monday morning, the package was intercepted in Atlanta, the home to CNN's worldwide headquarters.

The FBI said the package was "similar in appearance" to the 14 pipe bombs that prompted a federal investigation last week.

The new package bore the same markings and stamps as the others. It was addressed to "CNN" with the address of the network's headquarters, known as CNN Center.

Soon after the package was intercepted, a law enforcement official told CNN that authorities believe the package is from Cesar Sayoc, the suspect in last week's bombs.

This would bring the total number of known packages sent by Sayoc to 15. Sayoc was arrested on Friday and was formally charged on Monday.

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