UEFA have opened disciplinary proceedings against Anderlecht following the ugly scenes against Tottenham when Didier Zokora appeared to be struck by lighter thrown from the crowd.
Spurs goalkeeper Paul Robinson also picked up a metal rod which he handed to the fourth official after the final whistle of the 1-1 draw at the Constant Vanden Stock Stadium in Brussels.
"UEFA have opened disciplinary proceedings against Anderlecht for the throwing of objects by spectators," said a UEFA spokesman.
The Belgian side have already been fined for crowd disturbances during a Champions League qualifier earlier in the season against Fenerbahce and UEFA officials will take previous cases into consideration when they meet.
The punishments range from a fine to expulsion from the tournament.
"The control and disciplinary body will meet on December 13 to make a decision on this case," the spokesman added.
