ROME (AP) — Six Russians were killed and two others were injured when their snowmobile slammed into a fence and flipped over into a ditch during a night run down an Italian ski slope.

RAI state radio reported early Saturday that the crash occurred on an unlit slope late Friday on Mount Cermis in northeast Italy.

The Russian consul general in Milan, Alexei Parmonov, said on Russian state television that he was in contact with Italian investigators, who he said suspect the crash was caused by excessive speed. They also were checking the possibility of a mechanical malfunction.

Parmonov identified the four men and two women who died in the crash. Five of them and also one of the injured men were tourists from Krasnodar, a city in southern Russia near Sochi, which is preparing to hold the 2014 Winter Olympics.

One of the dead women and the other injured man worked in Italy in the tourist industry.

The Russian diplomat gave the names of the dead: Denis Kravchenko, Irina Kravchenko, Vyacheslav Sleptsov, Yulia Yudina, Lyudmila Yudina and Rafilya Pshenichnaya. The injured, he said, were Boris Yudin and Azat Agafarov. All except Pshenichnaya and Agafarov were tourists from Krasnodar.

Yudin’s 17-year-old son, who stayed behind in the hotel, lost his mother and sister in the accident, while his father was hospitalized with multiple fractures, Parmonov said.

In 1998, a U.S. Marine jet, flying low on a training run from a nearby air base, accidently sliced a ski gondola’s cable on Mount Cermis, sending the cable car crashing to the ground and claiming 20 lives.