A private jet crashed Sunday near the glitzy Swiss ski resort of St. Moritz, killing both people aboard, police said.

The twin-engine plane was attempting to land at Engadin airport about 125 miles (200 kilometers) east of the capital, Bern, before it crashed next to an electricity substation by the village of Bever.

The jet 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. (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. Authorities are investigating whether the plane came down after clipping electricity lines.

Engadin airport is described on its website as the highest in Europe, located 5,600 feet (1,700 meters) above sea level in the southeastern canton (state) of Graubuenden. 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.