Prized jerseys donated by the Warriors' number one fan have been stolen in a ram raid at Mt Smart Stadium overnight.
Sir Peter Leitch, better known as the Mad Butcher, said he is shattered after 14 jerseys which he had donated to the stadium were taken.
"Which is gut-wrenching because every one of those jerseys was very special, not only to me but to sports fans."
Among them were Awen Guttenbeil's testimonial jersey, and others signed by former captains Stacey Jones and Steve Price.
"You can't buy jerseys like that, they're precious."
Police said the burglary occurred just after 7.30 this morning.
A vehicle was used to force entry to gain access through a gate.
"They appear to have taken items from within the premises, and stolen a vehicle from the premises, causing further damage to two more gates when leaving," police said in a statement.
Sir Peter said he gifted the jerseys to the home of the Warriors so they could be enjoyed by everyone.
"These people that have done this are robbing the public from sharing in those jerseys."
Sir Peter noted the jerseys would not be able to be worn in public due to how easily identifiable the signatures make them.
"Some have been signed by the whole team!"
The jerseys were uninsured but Sir Peter said they would never be worth as much to whoever fobs them off as what they are to the rugby league community.
"They are irreplaceable."
Sir Peter said since he broke the news on Facebook, his phone has blown up with messages of support from former Warriors such as Monty Betham and Adam Blair.
Police said enquiries are ongoing.