Barcelona have been charged by UEFA after yellow balloons thrown on to the pitch by fans briefly interrupted their Champions League quarter-final first leg against Roma, per the Press Association (via ESPN FC).
The club's supporters released the balloons shortly after a series of pro-Catalan chants in the 17th minute on Wednesday, which took place at the request of pro-independence groups, according to Luis F. Rojo for Marca. The match was halted briefly to clear the balloons from the pitch.
Barcelona have been punished for breaching Article 16 (2): the throwing of objects.