Islamabad, Feb 4 Pakistan has blocked Wikipedia, the online encyclopedia, after it refused to remove offensive or blasphemous material, according to media reports on Saturday. The blacklisting of Wikipedia comes days after the Pakistan Telecom Authority (PTA) degraded Wikipedia services for 48 hours, threatening to block it if the content deemed ‘blasphemous’ was not deleted, The News newspaper reported. When a PTA spokesperson was contacted late on Friday night and inquired about the blocking of Wikipedia, the official confirmed that “yes” it had been blocked, it said.