A series of pitch invasions at Tottenham's White Hart Lane ground were carried out as an internet prank. A video posted on Youtube shows three men talking about invading the pitch ahead of Spurs' Europa League tie against Partizan Belgrade.
The video suggests that the stunt was a challenge to see which of the men could remain on the pitch for the longest time.
The men were all wearing T-shirts bearing the name of a headphone manufacturer.
The company condemned the invasions on Twitter, but Tottenham have removed all mentions of the brand from club channels and related stock from their shops while they investigate.
