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Double murder in Linköping can be solved with dna after 15 years

The 8-year-old boy and the 56-year-old woman was murdered on the morning of the 19 October 2004 in a residential area in the centre of Linköping. Since then, an unknown gunman remained on the loose. Jan Staaf, head of the investigation unit polisregion the East, hoping that the man will soon be able to be grasped with the help of the police increased powers at dna tracking.

– Previously we only had the opportunity to compare a dna profile directly against individuals, but now we can instead do a search against the offender's relatives, which we have done, " he says.

applies the changes introduced in the law that governs, which may be included in a dna study. Now can the police via the National forensiskt center (NFC) to carry out far wider investigations.

Now need a dna evidence from a crime scene is no longer perfectly match with dna evidence from another crime scene, or known gärningsperson, it is sufficient that a relative has committed a sufficiently serious crime to his dna-profile should be in the registry.

– Now when this possibility exists, we applied for to do a familjesökning. Through the we got a list of 30 names. You can say that we are doing a kind of family tree with the person's male relatives, now we will seek out these people.

is to interrogate the persons who are on the list. Jan Staaf says that the police will be based on previously known information about the offender, such as age and signalement, when assessing which persons are most interesting in the investigation.

– We will topsa all of the people that fits into certain criteria we have. We will be very aggressive in this investigation, " he says.

Over 7,500 people have been interrogated in the investigation and several thousand men have topsats in the hunt for the killer. The police extended powers to use dna technology can now lead to more unsolved cases to be cleared up.

in Gothenburg suspected of a 24-year-old rape of an 8-year-old girl.

" We have worked in exactly the same way as it did in Gothenburg, where they had success with the rape. I am very excited about the possibilities, especially when they reached the success so fast, but then one may see if it is just coincidence or not, it will show itself,

the Police and the NFC has launched a pilot project where, in addition to using the so-called spårregistret also make use of commercial släktforskningssajter, but so far it has not been done in this case, " says Jan Staaf.

– When it comes to using the commercial registry as there are several criteria that must be met, one must have exhausted all other options before it becomes news.

Read more: Document: Twelve years after the double murder, the perpetrator is still on the loose

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