Why did Turkey just block Wikipedia?

Wikipedia is now blocked in Turkey, according to news reports. 
Turkish authorities blocked all versions of Wikipedia in any language in the country through an "administrative measure" and did not give a reason, BBC reported. 
Turkish media reported that authorities had asked Wikipedia to remove content that linked Turkey to terrorist groups, BBC said. Wikipedia didn't remove that content, and was blocked on Saturday. 
In the past, Turkey has blocked Facebook and Twitter following