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At a Glance Rescuers were searching for possible victims buried in the snow.

At least two people were injured in Switzerland.

Three avalanches also hit an Austrian ski resort. Rescuers searched frantically Thursday for victims of avalanches at ski resorts in Switzerland and Austria.

Six people were rescued after one avalanche swept across a ski slope near the Swiss town of Andermatt, the Associated Press reported. Two had minor injuries.

Police feared others could be buried in the snow.

"We believe there are more people buried but we can’t say how many ," Reto Pfister, state police spokesperson in the Swiss canton of Uri, told NBC News.

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The avalanche hit mid-morning local time as holiday skiers filled the slopes. Alpine Rescue Switzerland, Swiss Air Ambulance and state police were all involved in the rescue operation, according to NBC.

<img class="styles__noscript__2rw2y" src="https://s.w-x.co/util/image/w/AP19360562951839.jpg?v=at&w=485&h=273" srcset="https://s.w-x.co/util/image/w/AP19360562951839.jpg?v=at&w=485&h=273 400w, https://s.w-x.co/util/image/w/AP19360562951839.jpg?v=ap&w=980&h=551 800w" > Rescue forces search for missing people after an avalanche swept down a ski piste in the central town of Andermatt, canton Uri, Switzerland, Thursday, Dec. 26, 2019. The avalanche occurred mid-morning Thursday while many holiday skiers enjoyed mountain sunshine the day after Christmas. (Urs Flueeler/Keystone via AP)

A ski instructor and her students helped rescue one woman from the snow.

"She was ash gray. Shocked. But I guess she'll be okay," Anne Jehn, director of Andermatt Ski Academy, told NBC.

Danger for the area had been at level three on a scale of five, according to the Institute for Snow and Avalanche Research (SLF), which said fresh and wind-drifted snow was the main threat.

Three avalanches hit the Austrian ski resort of Ankogel on Thursday, according to Reuters, where rescuers also searched for possible victims. Two skiers were buried in the snow but were able to escape.

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