Harrowing moment swimmer disappears under the water as he drowns at CrossFit Games on first day of event

CHILLING footage has emerged capturing the disturbing moment a swimmer drowned during the CrossFit Games.

The tragic incident unfolded during the first event of the annual competition in Fort Worth, Texas, when Serbian athlete Lazar Đukić was seen struggling in the water, just metres from the finish line.

Horrifying footage shows the swimmer gasping for air before reports of a drowning emerged Lazar Dukic, of Serbia, 28, died while competing in a CrossFit Games swimming event on Thursday, Aug.