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For more than four days, rescue teams have been searching for those missing after the Ask landslide.
On several occasions, police and firefighters have said that the information from the investigation means they are looking for specific areas in the avalanche.
One method used by the police in the investigation is to obtain mobile traffic from the mobile phones of the disappeared.
This is confirmed by the operations manager Bjørn Christian Willersrud to TV 2.
Question
He says they also use other methods in the search for the missing.
LIGHTING: Many people have lit candles in connection with the landslide tragedy in Gjerdrum. Photo: Kristin Grønning / TV 2
– Every imaginable investigation and intelligence steps have been used to get to the end of this, says Willersrud.
The taskmaster says that the police have also questioned those who know the missing persons and obtained other information that can generally contribute to the investigation.
As of Sunday night, three people were still missing in the avalanche.
Willersrud says they have no information that other people are missing in the relevant period where the landslide occurred.
Without looking at random
The fire department has said several times during the rescue operation that they are not looking for random people in the area.
On Saturday, Operations Manager Kenneth Wangen at the fire service said they have some alleged points of interest that they are investigating.
The search for the missing is carried out so that the firefighters first build roads and trails to the landslide area with the help of styrofoam boards and wooden materials to make it safe to go to the camp.
They then send dogs into the area to smell human tracks. During the searches, the dogs have made several marks on where the missing person might be.
When the dogs have left, rescue teams come in and examine the marks the dogs have made.
Disaster
Several of those who have been found dead have been found using dog markers.
INVESTIGATOR: The police are investigating as well as helping in the search for the missing. Task leader Bjørn Christian Willersrud at a press conference on Ask. Photo: Terje Pedersen / NTB
– How does it affect you that seven dead have been found?
– It characterizes us in the way that no survivors have been found so far, but gives a motivation to keep looking in the hope of finding the last ones, says Task Manager Willersrud.
– How extreme is the situation you are in now?
– Both emergency services and volunteers and the people in general describe it as a disaster, he says.
SEARCH BY NIGHT: Also tonight, rescue teams are searching for the missing. Photo: Ingvild Gjerdsjø / TV 2
The work of the five USAR teams that are in the avalanche pit and searching for the missing is risky. There is still a danger of new landslides, even if the top three centimeters of the area are frozen.
Emergency services hope to find survivors in airbags. But time passes and there are several factors that must be in place for that to be the case, such as air, heat, and access to water.
The search for the missing is in full swing Sunday night and late into Monday.
