Pakistan blocks Twitter because of material considered offensive to Islam - The Washington Post ISLAMABAD â€” The chairman of Pakistanâ€™s telecommunications authority says the government has blocked the social networking website Twitter because of material considered offensive to Islam. Mohammad Yaseen says the website was blocked on Sunday because Twitter refused to remove material related to a competition on Facebook to post images of Islamâ€™s Prophet Muhammad. Many Muslims regard depictions of the prophet, even favorable ones, as blasphemous. Yaseen said Facebook agreed to address Pakistanâ€™s concerns but officials have not been able to get Twitter to do the same. Officials from Facebook and Twitter could not immediately be reached for comment. Pakistan blocked Facebook for about two weeks in 2010 because of a similar competition. Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.