Leon A., six years old, drowned in a mountain river, the Kitzbüheler Ache, early in the morning in August 2022 in the Austrian holiday resort of Sankt Johann. Leon's father was said to have been knocked unconscious by an unknown person while walking along the riverside path and the helpless child got into the rushing water.
The investigators believed that the father wanted to save his son, who was terminally ill with the rare Syngap syndrome. He is suspected of faking the attack and being behind his son's death.