UEFA have fined Atletico Madrid €30 000 ($34 749) and handed down a suspended one-match ban for travelling fans due to the "racist and discriminatory" behaviour of some supporters during last month's 4-0 Champions League loss to Arsenal.
European soccer's governing body fined the Spanish club an additional €10 000 after some of their fans threw objects during the game at Arsenal's Emirates stadium.
The ban on selling tickets to supporters for an away match was suspended for a probationary period of one year, it added.
Atletico return to Champions League action at Dutch side PSV Eindhoven on 10 December. They are 12th in the table with nine points from five games.