Troubled Fremantle star Harley Bennell has been caught up in a police investigation, following a physical altercation with a bikie in the crowd at a pre-season match.

The Age understands that Bennell, when walking back to the crowd from the bathrooms in the JLT 2 clash with West Coast in Mandurah, was accosted by several men, one of whom is a member of the Coffin Cheaters motorcycle gang and is known to police.

Harley Bennell. Credit:Fremantle Football Club

The incident became physical and security is said to have stepped in and offered to escort Bennell to his car.

The incident is now being investigated as part of a wider probe by the Western Australia Organised Crime Squad.