Arctic researchers in northern Russia have been taken hostage after five polar bears surrounded their weather research station.

“People living in the Arctic must be prepared to face with a polar bear,” researcher Viktor Nikiforov said in a statement. “However, the station staff have no weapons. In addition, employees are not provided with stripping, and the station area is not fenced.”

The World Wide Fund for Nature in Russia (WWF) has been monitoring the situation. According to CNN, the researchers have been unable to scare the polar bears away. The only thing they have at their disposal to scare the bears are flares. Attempts to use the flares, however, have been unsuccessful. The research base is located on a small island off the northern coast of Russia.

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