( CNN ) Eleven channels associated with the French-language global television network TV5Monde went black late Wednesday due to an `` extremely powerful cyberattack , '' the network 's director said . In addition to its 11 channels , TV5Monde also temporarily lost control of its social media outlets and its websites , director Yves Bigot said in a video message posted later on Facebook . On a mobile site , which was still active , the network said it was `` hacked by an Islamist group . '' ISIS logos and markings could be seen on some TV5Monde social media accounts . But there was no immediate claim of responsibility by ISIS or any other group . The outage began around 10 p.m. Paris time ( 4 p.m . ET ) , and network teams were still working to restore service more than five hours later . According to France 's Ministry of Culture and Communications , TV5Monde offers round-the-clock entertainment , news and culturing programming in French that reaches 260 million homes worldwide . It functions under a partnership that consists of the governments of France , Canada and Switzerland , as well as the Wallonia-Brussels Federation . Other networks that provide content to TV5Monde include CNN affiliates France 2 and France 3 , France 24 and Radio France International .
TV5Monde went black late Wednesday and was still out hours later . The network blames an `` Islamist group '' ; there 's no claim of responsibility .