News blackout is now standard whenever a serious (terrorist) incident occurs - Facebook and Twitter were blocked as well for many.
Ankara governors office were round at a judges house within minutes getting a quick squiggle on the order to block the internet and news media.
US Embassy issued this earlier today:
Last week, the U.S. Embassy became aware of threat information through a Turkish government warning circulating in social media. After confirming the warning with Turkish authorities, the embassy issued a notice to all American citizens in Ankara – both government employees and private citizens – and to Turkish employees of the U.S. Embassy, as we routinely do when we learn of Turkish government information about threats"
Well bugger me, no-one I know in Ankara - or with connections to Ankara, got a message on TW or FB telling them that. Maybe they don't mix in the right circles, or are best chums with Bilal the benevolent.
JF