THE AFL is closely monitoring St Kilda's inquiry into a bizarre mad Monday prank that has led to a complaint being made to police.

It is alleged a dwarf entertainer, hired by Saints players to perform at their end of season drinks, was set on fire.

Football operations manager Mark Evans said the League was in contact with St Kilda over the incident.

"The players have been playing pranks on each other by setting the shoelaces on fire and signing happy birthday and they've singed the clothing of a performer that they had there," Evans said.

He indicated the AFL could step in.

"It's with St Kilda at the moment and once they provide us the details we'll then have a look at it from there.

" I think these practices of mad Mondays and bizarre behaviors and all those sorts of things, I think they're well gone.

"It's certainly bizarre, but it's not conceivable that this is the way we should operate at celebrations for (the) end of the season.