Mesut Ozil reportedly kicked a dressing room door in frustration at the weekend, following Arsenal's 2-0 defeat to Spurs at White Hart Lane.
The Arsenal winger, who's future with the club remains in doubt, apparently lashed out after he was randomly selected for a drugs test.
It was another disappointing performance from Arsenal, which compromised their chances of a last-four finish on the Premier League table, and ensured they will finish behind Spurs for the first time in over 20 years.
They're currently six points off fourth placed Man City, with just five games remaining to rescue their chances of earning Champions League qualification.
For Ozil, the misery of the result was compounded by a request to undergo a random drugs test after the game.
According to reports, the German player 'initially refused' to undergo the procedure and when he was informed that he could be facing a fine, he kicked a door and left an imprint of his studs, before reluctantly agreeing to be tested.
It's also believed that Ozil's actions were partly provoked by his frustration at the number of times he was asked to take a random drugs test this season, as well as Arsenal's poor run of results.
Both Ozil and Arsenal teammate Alexis Sanchez are heading into the final year of their Arsenal contracts, and talks about a renewal of their respective deals have been delayed until the end of this season.
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