A small plane coming from Croatia crashed Sunday near the southeastern Swiss ski resort of St. Moritz, killing both people aboard, police said, according to AP. The private jet was attempting to land at Engadin airport about 125 miles (200 kilometers) east of the capital, Bern, before it crashed into an electricity substation close to the village of Bever. The twin engine plane had flown from the Croatian capital Zagreb, regional police spokeswoman Sandro Pensa told The Associated Press. Both people aboard died in the crash shortly after 3 p.m. local time (1400 GMT, 9 a.m. EST), he said. The victims nationalities weren't immediately known. The crash, which prompted a large-scale emergency operation, also caused a power outage in the region, Pensa said. Engadin airport is described on its website as the highest in Europe, located 5,600 feet (1,700 meters) above sea level. It is mostly used by small private jets ferrying people to and from St. Moritz, a favorite skiing destination for the rich and famous deep in the Swiss Alps.