Arsenal have reported an allegation of racial abuse towards their substitutes during their victory over Leeds earlier this evening.
The alleged incident took place in the 33rd minute of the Premier League match at Elland Road, with the visitors' bench said to have heard the comment.
Mikel Arteta has confirmed that the remark has been reported, and said it was a 'single person' who aimed the verbal volley towards one of his substitutes.

'It was reported and the stadium manager will have to deal with that with the authorities,' Arteta said after Arsenal's 4-1 win.