The restaurant at the centre of a bill dispute with the Edmonton Oilers now faces an investigation of its own.

Alberta Liquor and Gaming wants to know if Osteria de Medici staff over-served alcohol to the professional hockey players and their partners.

On New Year's Eve, staff said the team refused to pay their nearly $17-thousand tab.

The restaurant says after arguing over the price of their food and drinks, the Oilers paid about $12-thousand instead

Since then, the restaurant and team have resolved their dispute, but the story isn't over.

New provincial regulations took effect on New Year's Day requiring staff at licensed restaurants to be trained to look for signs of over intoxication.

An anonymous tipster called liquor authorities to say staff continued to serve the Oilers, even after they were obviously extremely drunk.

If this is true, the restaurant could face thousands of dollars in fines.

Meanwhile, Oilers players maintain they did nothing wrong.

"I'll put it this way: I don't quite think that the truth is out there. We have people involved in the situation taking care of it from a legal standpoint," said centre Patrick O'Sullivan.

"I don't want to say it puts negative light on us because we didn't do anything wrong," said defenceman Denis Grebeshkov.

The owner of Osteria de Medici, Maurizio Terrigno, didn't comment on this Monday.

However, on the weekend, Terrigno asked both CTV and the Globe and Mail for money to do any more interviews.