A statement released by the Loughshinny Club, the organisers of the Skerries 100, said that they “deeply regretted that William Dunlop has passed away following injuries received in a tragic accident that occurred during practice which took place today, 7 July 2018”.
“The Loughshinny Motorcycle Supporters Club extends their heartfelt sympathy to William Dunlop’s family and friends. Our thoughts and prayers are with them at this very sad time,” the statement continued.
It is understood that William was taking part in an Open race practice session on his Temple Golf Club-backed R1 Yamaha when he crashed at the Sam’s Tunnel section of the 2.9-mile circuit on the third lap around 17:00 BST.
Red flags were immediately displayed to halt the session and medics and Gardai attended the scene.
The Loughshinny Club indicated that racing would take place on Sunday, with the entire prize fund donated to William Dunlop’s family.