From
http://edition.cnn.com/2016/01/07/europe/paris-attacks-brussels-operatives/

The man, using the false Samir Bouzid identification card at a Western Union outlet in the Brussels area, wired 750 euros ($807) to Hasna Ait Boulahcen on November 17, the Belgian prosecutor's office said. Both of the publicized suspects -- the men going by the names of Kayal and Bouzid -- were at the store from which the money was sent.

Time to stop the stupid rumor that BTC is used by the bad guys. They're using WU.