Turkey has blocked Twitter, Facebook, WhatsApp and YouTube, according to censorship monitoring site, Turkey Blocks. From a report on IT Pro: The group broke the news today around 1am local time, saying the government was throttling these services. This is a method of slowing down websites to the extent that they become difficult to use or unusable. Initially, issues with the social media and messaging apps detected on national provider TTNet, Turkcell, and they were soon reported on other big internet providers as well. The block follows the arrest of 11 politicians from the pro-Kurdish Peoples' Democratic Party (HDP) overnight in the south-east of the country. Many reports are linking the social media block to these arrests, with the HDP the main opposition party to that of Turkish president Recep Tayyip Erdogan.