A large number of scenarios are being explored by the investigation team. They are looking into possible business, relational, and criminal conflicts. The possibility of a mistake is also being investigated.
It can be said about the investigation that even experienced detectives rarely see a crime scene where traces of violence are so visibly present. In the past three years, more than a hundred so-called trace carriers have been sent to the NFI. This is exceptionally high. The extensive trace investigation has yielded a DNA profile that is being further investigated. It may relate to a perpetrators trace. What kind of trace this is, we do not want to share at this moment as it could frustrate the investigation later on. Given the many traces found and ongoing technical developments, there is hope that in the future more traces will yield results that may be important for the investigation.
Advanced Search Team
Neighborhood research, analysis of telecom data, and dozens of witness interrogations have taken place. The police have also invested heavily in a large camera project, where dozens of cameras in the wide area of Helenaveen have been monitored and analyzed. Forensic research has been conducted in the home, and the Advanced Search Team from Defense, which specializes in searching for hidden spaces, has also been called in. The extensive crime scene is one of the reasons that the house has been made available to the investigation team for an extended period.
Multiple Perpetrators
The fact is that Jan van Mullekom was killed by a significant amount of violence. He may have been forced to give something up through violence, but it is still unclear whether anything was taken by the perpetrator(s). Based on the traces and the violence committed, the investigation team now assumes there are likely multiple perpetrators. Given one of the scenarios, that it may involve a botched robbery, the investigation team is also looking into similar crimes in the country and border region. A link has not been established. Family detectives are involved in the investigation, keeping the relatives as informed as possible about developments in the investigation.
A reward of €15,000 is still available for the golden tip.
Share Your Information
There must be people who know or think they know more about the death of Jan van Mullekom, but who have not yet come forward to the police. We urge those people to step forward now, after almost three years, and share their information with us. Help solve this case so that the relatives can get clarity. Share your information via the Reporting Line, 0800-6070 or guaranteed anonymously via Meld Misdaad Anoniem, 0800-6070. It is never too late to talk.
Police Force

Source published: 22 May 25
Still Investigating the Death of Jan van Mullekom
Gebied: Helenaveen
The investigation into the death of Jan van Mullekom from Helenaveen has kept the police and justice busy for almost 3 years, since his passing in July 2022. The investigation is still ongoing. Thus, it is a long-term investigation. A brief update.