October 2004 - 8-year-old Mohammed Ammouri and 56-year-old Anna-Lena Svensson are brutally killed by an unknown man, armed with a knife. The offender, in addition to the knife, leaves traces in the form of blood and hair. His bloody cap is also found. However, despite secured evidence and a large police effort, no person can be arrested for the crime.

January 2019 - A new law gives the Police the right to so-called family search in Swedish DNA records. This means that DNA traces from crime sites can give hits even to close relatives, such as parents, children or siblings.

March 2019 - Police state that after searching for DNA records, they obtained about 30 people from the National Forensic Center's (NFC) register that have similarities to the perpetrator's DNA. These people are being questioned and questioned.

May 2019 - Police say that the topping of the people from the NFC's register has given nothing, but that they are still hopeful about solving the case.

August 2019 - Police state that the killer's DNA will instead be run through two US commercial genealogy databases in hopes of finding a killer relative.

October 2019 -Jan Staaf, investigating officer at the Östergötland police, tells SVT that he believes a solution to the double murder will be reached.

June 2020 - Police arrest 40-year-old man, reasonably suspected of murder.