Raiders football manager David Sharpe confirmed he had been in contact with the police regarding the matter.

''Police have confirmed they are investigating an incident outside All Bar Nun on Monday morning, possibly involving one of our players,'' Mr Sharpe said.

''Something has happened but we are unaware of all the facts. It's being investigated and we're waiting to find out the nature of exactly what took place, who was involved and to what extent that involvement included.''

When contacted by The Canberra Times Goodwin declined to talk.

''I can't say anything,'' he said.

''I've been told I can't comment. I'm not commenting mate.''

It is understood ACT Policing took statements from three people after the incident.

No formal interviews have been conducted.

Alcohol is believed to have been involved but no shopfronts at O'Connor were damaged in the fracas.

Mr Sharpe would not rule out taking internal action on at least one of the club's players before the official police investigation was completed.

''If police lay charges we would let the judicial process take its course but we may take action in the lead up if we believed it was necessary, depending on the nature of the incident and the facts surrounding it,'' he said.

''We treat any police-related incidents very seriously.

''We've got a strong discipline regime at the club. I won't say we'd stand them down, sack them, or what we'd do, but we'd treat it on its merit.''

The incident comes at a bad time for the Raiders, who have enjoyed consecutive NRL victories to move them to ninth position on the ladder, one point outside the top eight.

Goodwin last played first grade for Canberra in its 36-24 loss to the Cronulla Sharks on June 30.

Goodwin's future with the club remains unknown, despite signing a new three-year contract in April.