Munster Rugby head coach Anthony Foley who has also participated in the Bermuda World Rugby Classic has died suddenly at their team hotel in Paris.
Foley was a member of the 2010 Classic Lions team.
Foley, 42, died overnight at the hotel, where the team were staying prior to Sunday's game against Racing 92.
The European Champions Cup game was postponed following the former Ireland international's death.
A statement by the Irish Rugby Football Union said: "The IRFU and Munster Rugby pass on our deepest sympathy to all of Anthony's family and friends."
It added: "We ask for privacy for the family at this sad time."
Foley is survived by his wife Olive and two children.
Foley, whose father Brendan also played for Ireland, made 201 appearances in the back row for Munster in a playing career that spanned 13 years.
He made his debut in 1995 against Swansea in the province's first match in the Heineken Cup - a competition in which he would later captain his side to victory in 2006, having twice finished as a runner-up (in 2000 and 2002).
He would also captain Ireland three times in winning 62 caps, having made a try-scoring debut in the Five Nations defeat by England in January 1995.
He was replaced as Munster captain by Paul O'Connell for the 2007-08 season, at the end of which he announced his retirement and joined their coaching staff.
Foley initially took over as Munster forwards coach in 2011 - a role he briefly undertook with Ireland during the 2012 Six Nations - before graduating to head coach in 2014 after the departure of Rob Penney.
Munster appointed South African Rassie Erasmus as the club's director of rugby in July but Foley's job title remained head coach.