The report, citing police, says that the climbers had been part of an eight-person group when the avalanche hit today.
Four of them were able to free themselves from the snow on their own and alerted rescue crews.
The avalanche came on the 2,450-meter-high (8,050-foot) Jochgrubenkopf mountain, southeast of Innsbruck, and measured about 700 meters (2,300 feet) long with snow depth reaching 12 meters (40 feet).
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