Wigan Warriors club president Peter Higginbottom has died aged 66.
Higginbottom took over as Warriors president in 2005 following an 11-year spell as the Rugby Football League's disciplinary committee chairman.
The lifelong Wigan fan began his involvement with the club in 1979 when he joined the board of directors.
Club chairman Ian Lenagan said: "He was a great friend to everyone at Wigan. His contribution to the Club over many years has been magnificent."
Lenagan added: "He was a Wigan man through-and-through and our thoughts go out to his family and friends at this sad time.
"Everyone at the club is devastated to hear the news of Peter's death at such an early age."
Former Warriors' full-back Kris Radlinski, who is general manager at the DW Stadium, added: "This is a sad day for Wigan and I speak for many past players in saying how much Peter will be missed."
Higginbottom first joined the board of directors at Wigan over 30 years ago, and became a director again in 2008. The former solicitor also played a major role for the RFL, including heading up the 2000 World Cup disciplinary committee.
RFL chairman Richard Lewis said: "I had the privilege of knowing Peter for a number of years. He was very popular and well thought of within the sport and on behalf of the RFL I would like to send my condolences to his family."
Warriors will wear black armbands for their upcoming Super League tie against Warrington on Saturday, and a minute's silence will be held prior to Wigan's next home game against Catalans Dragons on Friday, 26 February.