QPR have announced on Friday that midfielder Joey Barton will not appeal against his 12-match ban for violent conduct following his dismissal against Manchester City on the final day of the season.
Barton, 29, was handed the ban and a £75,000 fine by an independent commision on Wednesday, having been found guilty of two counts of violent conduct besides his original dismissal.
QPR have confirmed that they will now carry out their own investigation into the incident.
The club said in a statement: "Queens Park Rangers Football Club can confirm it has now started a full internal investigation in relation to Joey Barton's dismissal and subsequent events against Manchester City on the final day of the 2012/13 Barclays Premier League season.
"The QPR midfielder will not appeal against the independent regulatory commission's decision made on Wednesday and he and his team are now working in full cooperation with the club to assist in the internal investigation. The club expects the investigation to last at least two weeks. During this period, no one from the club or Joey Barton himself will make any further comment.''