Twenty-one people, including 11 schoolchildren, have been missing for several days in the Chukot tundra of Russia's far north, the emergency ministry said Wednesday.
"Searches have turned up no leads for the moment," a ministry spokesman told AFP.
The school group set out from the village of Meinepyldino, around 10,000 kilometers (6,000 miles) east of Moscow, in two all-terrain vehicles on November 16.
However, radio contact was lost on Monday after the group reported it was stranded 70 kilometers (40 miles) from the village of Beringovsky village.
Three off-road vehicles that set out to rescue the party had to turn back because of deep snow, while a helicopter mission had to be abandoned because of the bad weather.
Temperatures in the area are reported to be between six and 10 degrees below zero Celsius.
As of the last radio contact, none of the groups were hurt and they had enough supplies to last several days.
Even so, the emergencies ministry spokesman said Wednesday: "The situation is beginning to get worrying" -- MOSCOW (AFP)
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