Olympic biathlon champion Sturla Holm Lægreid wasn’t allowed to compete in the men’s mass start at the World Cup on Sunday after an incident with his rifle in the Norwegian team accommodation in Lenzerheide, Switzerland. According to a statement from the biathlon ruling body IBU, Lægreid accidentally fired a shot during dry shooting training at the hotel. No one was harmed in the incident. The Swiss authorities are investigating the case to gather further information and to decide whether additional actions will be taken, the IBU said. “I am deeply sorry for this incident, and strongly apologi…