Ulster Rugby say they are “deeply saddened” by the death of former player Russell Nelson.
The South African-born flanker joined the Irish province in 2000 and made 30 senior appearances.
Alongside his career with Ulster, Nelson played for Ballymena RFC in the All-Ireland League and helped the club to the title for the first time in 2003.
Ballymena said the achievement “holds a special place” in the club’s history in a tribute to Nelson.
Before joining Ulster, he played for Boland and the Bulls in his native South Africa.
In a post on social media, Ulster said that Nelson’s “leadership and character” stood out.
“He will be remembered with great respect by teammates, supporters and all who had the privilege of knowing him,” the province said.
“Our heartfelt condolences are with Russell’s family and friends during this difficult time.”