Chelsea are co-operating fully with the Football Association and Metropolitan Police after Didier Drogba was charged with violent conduct following an incident in the Blues' Carling Cup defeat to Burnley on Wednesday.
The Ivory Coast international appeared to throw a coin back into the visiting fans at Stamford Bridge, having been the target of missiles after opening the scoring for the Blues.
The statement from the club read: "Chelsea Football Club will be co-operating fully with the Football Association and Metropolitan Police processes that are now underway regarding the regrettable incidents on Wednesday night.
"We welcome Burnley's assistance in trying to help identify the small minority of their support who spoiled a great occasion for their club.
"Although Didier Drogba was hit by an object, that does not excuse his subsequent actions. He also recognises that, has not sought to justify it that way, has sincerely expressed his regret and has apologised for the incident.
"The matter will be dealt with internally by the club after the FA and police processes are completed."
Earlier on Friday, the FA confirmed they had charged Drogba with violent conduct, saying in a statement: "Drogba is alleged to have thrown a missile into the away section of the crowd after scoring during the League Cup match at Stamford Bridge.
"He has until 6pm on Monday 17 November to respond to the charge and a regulatory commission will hear the case on Tuesday 18 November.
"Referee Keith Stroud confirmed to the FA that he had booked Drogba for going towards the opposition supporters to celebrate, but that he had not seen the missile incident.
"The FA has written to both Chelsea and Burnley to request information on missiles thrown at Chelsea players from the Burnley section. The FA is also liaising with Metropolitan Police regarding these incidents."