Some of CNN's social media accounts and blogs have been hacked.
The affected accounts included CNN's main Facebook account, CNN Politics' Facebook account and the Twitter pages for CNN and CNN's Security Clearance. Blogs for Political Ticker, The Lead, Security Clearance, The Situation Room and Crossfire were also hacked.
The posts were deleted within minutes and the accounts have since been secured, CNN said.
Some of the posts claimed that the Syrian Electronic Army, a group of pro-Syrian regime hackers that has aggressively targeted major news organizations and activists, was responsible.
Another post Thursday night on a Twitter account purportedly tied to the group said it was retaliating for "viciously lying reporting aimed at prolonging the suffering in Syria," CNN said.