Top Irish motorcycle racer Darran Lindsay has been killed in practice for the Killalane road races, near Dublin.
Darran Lindsay was one of Ireland's top road racers
The popular 34-year-old rider is believed to have been involved in a crash involving one other machine in 600cc practice on Saturday evening.
Lindsay, from Dundrod, was married to Kerry with three young sons.
A top competitor on both public roads and circuits, Lindsay was a former North West 200 and Ulster Grand Prix winner and four-times Irish champion.
Lindsay began racing in 1990 and became one of the most consistent performers on road and track, taking numerous wins at Irish championship level across Ireland.
He won five races at the Ulster Grand Prix, including a hat-trick of victories in 2002 and single successes in 2003 and 2006.
His sole North West 200 win came in the 125cc class in 2005 and he also competed at the Isle of Man TT on several occasions.
He won a newcomers race at the 1997 Manx Grand Prix and followed that up by winning the Ultra Lightweight Manx Grand Prix twelve months later.
Although specialising in the smaller capacity machinery, Lindsay was also a fine competitor on the larger 600cc and Superbike machines.
He showed his versatility by taking two wins at the Sunflower international short circuit meeting.
Last year another top Irish road racer, Richard Britton, was killed at the Ballybunion races.
Donegal rider Raymond Porter was injured in Saturday's accident, suffering a broken collarbone and a dislocated knee.
All the prize money from Sunday's racing was donated to a fund for the Lindsay family.