The search for a skier still missing after the Easter weekend avalanche in Switzerland’s Zermatt municipality has been called off, police said on Wednesday. The 30-year-old man was reported missing only recently. Police are in contact with his relatives. Three victims have now been identified. They include a 15-year-old US national, a 58-year old Swiss man and a 25-year-old Canadian woman. Another skier, a 20-year-old Swiss national, was flown to hospital with serious injuries after the avalanche, which took place on Easter Monday. The avalanche came down on an off-piste area of the Riffelberg…