At least three people are missing after an avalanche in Zermatt, Switzerland, swept away several people on Monday amidst high avalanche risks in the southern Alps of Austria and Switzerland. Police were searching for at least three missing people, a spokesman said early on Monday evening. It is possible that more people were swept away. However, according to the spokesman, there were initially no reports of missing persons. A large contingent of police and rescue workers were on site, said the spokesman for the police in Valais canton. The search area is very large. Zermatt lies below the Matt…