Pakistan has blocked the popular video sharing website YouTube indefinitely in a bid to contain “blasphemous” material, officials said on Thursday. The blockade came after the Pakistan Telecommunication Authority (PTA) directed Internet service providers to block access to social network site Facebook indefinitely on Wednesday because of an online competition to draw the Prophet Mohammad. Any representation of the Prophet Mohammad is deemed un-Islamic and blasphemous by Muslims. Wahaj-us-Siraj, the CEO of Nayatel, an Internet service provider, said the PTA issued an order late on Wednesday seeking an “immediate” block on YouTube, which is owned Internet giant Google. YouTube was also blocked in the Muslim country in 2007 for about a year for what Pakistan called un-Islamic videos. Some other websites, including Wikipedia and Flickr, have been inaccessible in Pakistan since Wednesday night. But the authority’s spokesman said those sites had been blocked for technical reasons and no orders had been issued against them.