Message : Required fields ISLAMABAD (Reuters) - Pakistan temporarily blocked Facebook, Twitter and several other social media apps on security grounds on Friday amid a crackdown against a violent Islamist group, officials said. "In order to maintain public order and safety, access to certain social media applications has been restricted temporarily," a senior telecommunications authority official told Reuters, without specifying which social media. The interior ministry said in a statement the block would last until 1500 local time (1000 GMT) and applied to YouTube, Facebook, WhatsApp, Twitter, Telegram and Tiktok. Pakistan said this week it had banned the Islamist group Tehrik-i-Labaik Pakistan (TLP) after the arrest of its leader sparked major nationwide protests that were also fuelled by anti-France sentiment.