Telefonmysteriet the police need to solve

the Police confirming Friday that they have not yet received evidence that the missing Anne-Elisabeth Hagen (68) liver, 107 days after she disappeared from her home in Fjellhamar in Lørenskog.

" We are concerned that we have not received any heartbeat, despite the fact that the family on several occasions has gone out with a clear message that they are not willing to negotiate without livsbevis. This is why we are worried, " says etterforskningsleder Tommy Brøske in the East police district to the Newspaper.

He adds that the police understand that it can take time to submit such evidence.

on Monday this week confirmed the police and the Garden-the family's lawyer Svein Holden that there had been new contact with the suspected kidnappers in the case. Friday do not want Brøske to say whether there has been further contact with respondent since that time.

Livstegnet need to convince. So begins the most difficult part is Not identified

at the same time continuing police efforts to investigate the tracks, and, not least, the hunt for answers in the mystery of the so-called luemannen and the so-called telefonmannen.

At the beginning of January went to the police with a surveillance video that shows a total of three people that are moving outside of the future Tense-built in Lørenskog 31. October, the same day police believe that Anne-Elisabeth Hagen (68) was abducted from his home a few kilometers away.

Police: New contact with the suspected kidnappers in the Garden-the disappearance

One of the people, a cyclist, signed up quickly to the police and has been checked out of the case. But still, well over a month after the police went out with his requests, the police still cannot identify the other two men.

We made an assessment shortly after the case was publicly known, that it was important to go out with this etterlysningen to get tips from the public. Despite a series of tips, we have not been able to identify the two, says Brøske that denotes the job with to identify the men as important and of great importance.

The two people were caught by the cameras at the Futurum building, where Anne-elisabeth's husband Tom Garden work, respectively 07.36 until 08: 00 the 31. October of last year.

MISSING: Police believe Anne-Elisabeth Hagen was abducted from her home in Lørenskog, 31. October of last year. Video: Lars Eivind Bones / Dagbladet Show more Have done research

One of these are apparent and speak in a telephone, and politiinspektør Brøske confirms that the police have done etterforskningsgrep based on this.

Have the police examined the mobile traffic against cell towers in the area?

- It is registered that it is possible that the person has up a telephone. We have, naturally enough, in the extension of it made a lot of things, but I can't comment on the outcome of the investigations, he says to Dagbladet.

it May be that they want to pretend that he is talking in the phone?

- There can be various hypotheses that it may be due to test around the observation of him, " says Brøske.

as with The previous want Brøske not to say anything about what the police know, or not, about the two men's movements further.

Found the killer

There are examples in both the Uk and internationally where the use of the so-called stordata have given police vital clues in a criminal investigation.

A breakthrough in the Norwegian context came when the police succeeded in finding the man who today is imprisoned for the murder of the Bulgarian sexarbeideren Galina Sandeva.

KILLED: Galina Sandeva was killed with over 30 knife wounds in Oslo in 2015. Photo: Private Show more

When Sandeva (28) was found knivdrept in his own car on the Bispekaia, right by the opera house in the centre of Oslo, at 17.19 Thursday 17. December in 2015, stood the police virtually without clues in the search for the unknown perpetrator.

the Newspaper has previously told about the politimetodene that led to the arrest of one of Norway's most publicized investigations of the last few years.

Politiadvokat Tina Bjarkø Helleland told Dagbladet in 2016 that the police quickly came in contact with Galinas friends and acquaintances, and asked to get the most information about her and who she was in contact with.

So did the Galina-killing the Newspaper Plus

When it was revealed that her phone was still active, and that it had moved from the area by Bispekaia and in the direction of St. Hanshaugen, says Helleland.

Police believe Sandeva was killed around noon. 21.32, at the same time as it came to an eight-second emergency call from the telephone her, something that was perceived as a "lommeanrop".

her Phone was last registered at a base station on the St. Hanshaugen/Isa in Oslo kl. 22.32.

the Police began to direct the investigation against the 25-year-old.

They knew which cell towers Sandevas mobile had been dropped from the Bispekaia and to St. Hanshaugen. Finally, could the analysts extract the data that showed that the defendant and the victim's phone had moved in a similar way in the same time period.

Everything indicated that he had had with her cellphone.

the Analysis showed that the movements on the siktedes telephone was coincident with the movement of the fornærmedes telephone, said Helleland to Dagbladet at the time.

ESSENTIAL: Electronic tracks was crucial in the police looking at the man who had killed Galina Sandeva. Graphics: Kjell Erik Berg / the Norwegian newspaper Dagbladet Show more - Can survey all of the in the area

When serious criminal cases, which may initially have a sentence of more than six years, or in the cases where it says about life and health, the police can retrieve data from the telecom providers to try and locate people they are looking for.

Then they can see which phones are connected to the databasestasjoner in an area and survey all that has been in the area at a given time, " says senior advisor Vidar Sandland at the Norwegian centre for informasjonssikring (Norsis) to Dagbladet.

MARKED: Rolf Arne Letvik (64) is the friend and neighbour of the abducted Anne-Elisabeth Garden. He realized quickly that something was wrong, and is very despondent over the fact that it has gone so long without a solution. Video: Jesper Nordahl Finsveen and Lars Eivind Bones / Dagbladet Show more

the Identity of the so-called telefonmannen and the so-called luemannen from overvåkningsvideoen is not known to the police. They can therefore initially do not know which number they are looking for, and therefore does not who they should check more closely.

But the police can to some degree get better accuracy if there are many base stations there. Then they can see which mobile phones, which was approximately where the current time period, and will soon have a manageable number of cell phones they can follow. Yet they need to check out all the phones. If there is talk about 500, or 1000, or more then they must check out every single phone, " says Sandland and add:

IT-EXPERT: Vidar Sandland is a senior adviser at Norsis and expert on IT and informasjonssikkerthet. Photo: Øistein Norum Monsen / DAGBLADET Show more

I will predict that they have narrowed it quite a lot already.

Believe the police have used the data

There are plenty of examples of that online slots have been critical of the police in hunting criminals, or missing persons.

- When people are reported missing is telefonsporing one of the first things the police do. They have the authority in law to do it, if you believe it can save lives.

If there is talk about telefonspor as a leader abroad, is the police depending on the to cooperate with the authorities in other countries to get out the data they want to access.

- The most interesting in this case is the data from the area where this happened. The people the police are looking for is the only witness so far. At the same time, I also believe that the police have a good overview over who may be witnesses in the case, based on the traffic in the area. I want to believe that these data have been used to make direct contact with the witnesses who have been in the area, " says Sandland.

Ten weeks before the police told about the case: - Can be attempts to get in contact with gjerningspersonene