NRL betting probe

New South Wales Police will probe recent unusual betting activity leading up to the Round 24 match between the Cowboys and Bulldogs after the matter was referred to them by the NRL.

Several betting agencies suspended betting on the first scoring play in the lead-up to the match on August 21 because there was an irregularly high volume of betting that a penalty goal would be the first points scored.

There were even suggestions last week in Sydney that Bulldogs prop Ryan Tandy might be involved after he lost possession on the opening set of the match and then conceded a penalty close to his own posts moments later for lying down too long in a tackle.

Those backing the penalty for the opening score missed out on a collect when the Cowboys elected to take a quick tap close to the posts and went on to score a try in the ensuing set, while Tandy later denied any wrongdoing and said he'd heard nothing of the betting patterns until days later.

But having launched their own investigation following the match, in consultation with Racing New South Wales chief steward Ray Murrihy and several betting agencies, the NRL have now referred the matter to police.

"Clearly this is a matter that requires the most thorough investigation possible and we believe it is in everyone's interests for the police to be involved," said NRL chief executive David Gallop.

"We have informally shared with them the information that has been compiled to date and will continue to work with them to assist with any investigation that may result."

"At this stage the NRL has not made any accusations against any individuals."