The previous year, Olympic competitors Jakob, 23, and his older brothers Henrik, 33, and Filip, 31, went public with their allegations that their father, who had been their coach until 2022, had been violent.
The 58-year-old vehemently refutes the accusations.
According to a statement released on Monday by Norwegian police, who had been investigating the matter, Gjert was charged with one crime.
According to the Norwegian website , which broke the original story involving the brothers, the victim, external, who was supposedly beaten once with a wet towel, was actually a younger relative rather than one of the three siblings.
Five further cases against Gjert have been dismissed.