The package addressed to the news network was intercepted at an Atlanta post office on Monday, CNN Worldwide president Jeff Zucker said in a post on Twitter.
Mr Zucker said there was no imminent danger and that since Wednesday all mail to CNN has been screened at offsite facilities.
Why Ricciardo is facing two more years of punching walls
Ricciardo, who leaves Red Bull for Renault next season, was battling for a possible podium finish when he was forced into retirement.
The second package was addressed to both CNN contributor James Clapper, the former director of National Intelligence, and CNN.
The network said that the "package looks similar in appearance to the wave of pipe bombs that were mailed last week to prominent Democrats around the country, including two that were addressed to CNN's NY bureau". Bomb squads were called to the post office about a suspicious parcel, just hours before a court hearing for a Florida man accused of sending packages containing explosive material to prominent Democrats.
"All mail, at all CNN domestic bureaus, is being screened at off-site facilities as of last Wednesday", he explained. Another package was delivered to the cable network's NY offices last week, causing an evacuation.
Student Shot at Butler HS, Shooter in Custody
Clayton Wilcox said in a press conference outside the school that the shooting occurred after a disagreement between two students. Multiple parents told local television channels that they felt confused and unsure about where to meet with their children.
CNN emphasized that mail sent to its NY offices is now being screened at an offsite facility, as is the case for all mail sent to CNN's domestic bureaus. We don't know to whom it was addressed to at this point.
Atlanta Police have confirmed they responded to a suspicious package at a post office Monday morning. The package appears identical to the other packages authorities say were sent by pipe bomb suspect Cesar Sayoc, who was arrested on Friday.
The news network said FBI is investigating the package. On Friday, authorities arrested Cesar Sayoc for the mailed explosives and warned at the time that more such devices could already by in the postal system.
Reed leads after opening round of World Golf Championships in Shanghai
The birdie was enough to see Finau regain the lead and his length off the tee allowed him to take advantage of the par five last. Looking at that, I knew just he's going to splash it out. "I was happy just to make a few birdies coming down the stretch".