The English Premier League have sworn to leave no stone unturned as they launch an investigation into the work of their commercial department.

An awards ceremony, organised by the commercial department, has already been cancelled by the League after the investigation team spoke to individuals concerned and looked at documents relating to the ceremony.

Now a committee, including Premier League club chairmen Ken Bates, Doug Ellis and Bryan Richardson, are set to implement a thorough examination of the commercial department's affairs to allay concerns among Premiership clubs and sponsors.

"We are examining the work of the commercial department," Premier League spokesman Mike Lee said.

"The Premier League is keen to ensure that the interests of our clubs and sponsors are properly protected. We are looking at relevant documents and contracts before deciding what, if any, further action is needed."

The Premier League board are working with the management committee to review the contractual arrangements and other documentation from the commercial department.

Last week, the League confirmed that commercial director Stephen Pearson would not be required to serve out his three-month notice after tending his resignation.

Meanwhile Leicester City insist it could be up to a fortnight before they name any guilty parties in the English League Cup final ticket row.

The club are continuing to investigate claims into alleged illegal ticketing which caused segregation problems and led to violence in the first half of City's clash with Tottenham at Wembley.