Fremantle chief executive Steve Rosich said today that Michael Johnson was cooperating fully with enquires into an alleged incident involving the player in Leederville at the weekend.

"We are treating the matter seriously and we are very disappointed that Michael placed himself in such a situation last weekend,” Rosich said.

"Michael, who was on leave at the time, is a senior player and a member of our leadership group.

“In this instance the position Michael placed himself in, including his alleged behaviour, was not acceptable.  As a club we support the person and challenge the behaviour.

“Thankfully, there was not anyone seriously injured.

"The club has advised the AFL and will continue to update the AFL until the matter is resolved.

"Given that the matter is still being investigated by police, the club is not in a position to comment further or discuss any possible sanction until the investigative and legal process is completed.”