Modern Pentathlon: Arthur Lanigan-O'Keeffe claimed his first World Cup gold medal in Bulgaria on Saturday.
The Kilkenny man secured victory with a first-placed finish in the final event of the competition, the laser-run, to become world champion, finishing ahead of South Korea's Jun Woong-tae.
The Rio Olympian, who finished eighth at the 2016 event in Brazil, was joined at the event by Natalya Coyle, who won a silver medal at the woman's competition.
Coyle has also attended two Olympic Games, with a sixth-placed finish in 2016 her best performance.
The modern pentathlon has been part of the Olympic Games since 1912, and sees athletes compete in five events - fencing, swimming, equestrian show jumping and a combined event laser-run, where competitors complete four rounds of laser pistol shooting, with an 800-metre run between each round.