Leicester Tigers Board of Directors issued the following statement on Tuesday in relation to Saturday's Heineken Cup tie against the Ospreys:

The Leicester Tigers Board of Directors have reviewed the footage of Saturday’s Heineken Cup Pool 3 game against Ospreys and believe there is a clear case for concern.

The Board has a duty to the Club and the other teams in the competition to do everything in their power to help ERC to determine, as fully and speedily as possible, who was responsible for a 16th player being on the pitch.

To that end, the Club have lodged an official written complaint with ERC which they are now in the process of investigating. Everyone at the Club is totally committed to supporting the investigation in any way they can.

Leicester Tigers Chairman, Peter Tom CBE, is also writing to the Chairman of ERC, Jean-Pierre Lux, to detail our concerns in respect of the incident and the Club has instructed a leading firm of sports law specialists to represent them in this matter.