The rescue service is still working to extinguish the fire, and it will continue throughout the day, says Liv Hilde Nytrøen at the police.
The women were friends and had gathered in the house to socialize.
The alarm about the fire came during the early morning. The affected house has been completely destroyed and an adjacent house has also been damaged.
It's a demanding effort. It's a large fire and a densely populated area, says incident manager Haagen Løvseth to NRK.
The municipality has activated its crisis team. The cause of the fire is not known.
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