UEFA have confirmed that they have charged the German Football Association (DFB) after their fans threw missiles onto the pitch during their Group B clash with Portugal in Lviv on Saturday.
The German fans gathered behind one of the goals and repeatedly threw what appeared to be scrunched up pieces of paper towards Portuguese players as they prepared to take corners.
UEFA officials warned the German fans three times that such behaviour could see the game abandoned.
The Portuguese Football Federation are also facing disciplinary action after kick-off for the second half was delayed.
UEFA's control and disciplinary body will deal with both cases on Thursday.
"The German Football Association (DFB) is charged with the throwing of missiles by their supporters, while the Portuguese Football Federation (FPF) faces proceedings for a delayed kick-off to the second half," UEFA said in a statement on Sunday.
Germany went on to win the game 1-0 thanks to Mario Gomez's second half header.