A man has been arrested on suspicion of a racially aggravated public order offence during a Premier League match.
The 29-year-old was held in connection with an alleged incident at Arsenal's match against Newcastle on March 12.
The club carried out an internal investigation following reports that an individual had been caught on Sky Sports' live television coverage of the match at Emirates Stadium abusing Newcastle's Cheick Tiote.
A club statement confirmed: "Following an incident during our home Premier League match against Newcastle United on Monday March 12, a 29-year-old man has been arrested on suspicion of a racially aggravated public order offence.
"The suspect has been interviewed and bailed to return to Islington police station in April.
"Arsenal Football Club would like to take this opportunity to thank the Metropolitan Police Service for their co-operation and swift action in this matter.
"We reiterate that Arsenal Football Club does not tolerate foul language, racist chanting, homophobic chanting or any anti-social behaviour at Emirates Stadium, and we will continue to act with zero tolerance towards any individual found to be acting in an abusive manner."
A Scotland Yard spokesman said: "Metropolitan Police officers today arrested a 29-year-old man at an address in Ilford on suspicion of a racially aggravated public order offence.
"He was taken to a north London police station where he was subsequently bailed to a date in April.
"The arrest follows an allegation after the Arsenal match against Newcastle at the Emirates Stadium on Monday 12 March."