The Irish jockey Michael O’Sullivan has died as a result of the injuries he suffered in a fall at Thurles on 6 February, the Irish Horseracing Regulatory Board (IHRB) has announced.

The 24-year-old was riding Wee Charlie for trainer Gerard O’Leary and was one of three fallers at the final fence in the two-mile Racing Again February 20th Handicap Chase.

The rest of the meeting was abandoned as the air ambulance arrived to take O’Sullivan to hospital, and it was later confirmed that he was being treated in the intensive care unit at Cork University Hospital, where he had remained since.

Dr Jennifer Pugh, chief medical officer of the IHRB, said in a statement: “Michael sadly passed away in the early hours of Sunday morning surrounded by his loving family in Cork University Hospital.”

“We extend our appreciation to the multidisciplinary teams who provided the best of medical care to Michael, both on the racecourse and in Cork University Hospital,” Dr Pugh added.

“I have had the privilege of knowing Michael through his amateur and professional career and his dedication, modesty and kind nature always made him a pleasure to be around. Michael’s success and his humility will have inspired many and I share the feeling of loss today with all those who knew him.

“Michael’s family would like to reiterate their gratefulness for all the support they have received in the last couple of days and express their appreciation to the local community and racing family. The O’Sullivan family have asked for privacy at this time.

Dr Pugh added: “Michael’s family took the decision to donate his organs at this incredibly difficult time, but in doing so made a choice that will make a real difference to the lives of other patients and their families.”

Darragh O’Loughlin, CEO of the IHRB, said: “Michael was an exceptionally talented young rider who was always popular in the weigh room. Michael will be deeply missed by everyone in racing who had the pleasure of knowing him.

“Our hearts go out to Michael’s family, especially his parents, Bernadette and William and his brother Alan, who will feel his loss most keenly.”

O’Sullivan began his riding career on the point-to-point circuit and was crowned champion under-21 rider in 2019. His first win under rules came at Cork in 2018 when he guided Wilcosdiana, trained by his uncle, Eugene, to a 47-length victory in a hunter chase, and he turned professional in September 2022.

It did not take O’Sullivan long to make a major impact in the professional ranks, as he enjoyed a notable winner at that month’s Harvest Festival at Listowel. He won aboard the Terence O’Brien-trained Magnor Glory, and just three days later he steered Enniskerry to a Grade Three success for owner-trainer Barry Connell at Roscommon.

The link-up with Connell would prove hugely successful that season, with the pair combining to land both the Royal Bond Novices’ Hurdle at Fairyhouse and the Supreme Novices’ Hurdle at Cheltenham with Marine Nationale. Good Land was also a Grade One winner for the team at the Dublin Racing Festival.

O’Sullivan enjoyed a day one double at the 2023 Cheltenham Festival, winning with Marine Nationale and Gordon Elliott’s Jazzy Matty in the Boodles Juvenile Handicap Hurdle. He rounded off his breakthrough campaign by being crowned champion conditional in Ireland with 32 winners.

In all, O’Sullivan rode 90 winners in Ireland and five in Britain under rules, with his most recent big-race success coming aboard Embassy Gardens for champion trainer Willie Mullins in the Grade Three New Year’s Day Chase at Tramore.

As a mark of respect, Sunday’s races at Punchestown have been cancelled, along with three point-to-point fixtures scheduled to take place in Ireland. “Punchestown will not race today as a mark of respect to Michael O’Sullivan who has passed,” the race course confirmed. “His family, friends and racing colleagues are in our thoughts and prayers. A very sad day. RIP.”