The attacks and long-running investigation are documented. Their perpetrators, political purpose and any command link to Gladio remain unresolved.
Between 1982 and 1985, the group known as the Brabant Killers, Bende van Nijvel, or Tueurs du Brabant carried out a series of violent attacks in Belgium. The commonly reported toll is 28 dead and about 40 injured.
The perpetrators have never been judicially identified. Belgian federal prosecutors announced in June 2024 that active investigative avenues had been exhausted, but later victim-requested investigative acts kept parts of the file alive.
The killings occurred during a period of high Cold War tension, NATO missile politics, far-right mobilisation, security-service controversy, and public anxiety over violent crime. That background matters because the case was never only a robbery file in Belgian public memory.
Operation Gladio and related stay-behind networks were publicly exposed in 1990 and examined by European institutions. The Belgian debate has repeatedly asked whether personnel, weapons culture, or extremist networks around the security services overlapped with the Brabant case. Overlap and suspicion remain different from proof.
The sequence of material events
Armed robberies, burglaries, and killings attributed to the Brabant Killers begin. The violence is quickly described as disproportionate to the value of goods or cash taken.
The deadliest phase includes attacks on supermarkets, culminating in the Aalst Delhaize attack on November 9, 1985, where eight people were killed. After that attack, the known campaign stops.
Belgian parliamentary inquiries examine the case and broader failures in policing, organised-crime response, and special investigative methods. The case remains unresolved.
The European Parliament responds to revelations about clandestine stay-behind networks in Europe. Those disclosures later intensify public suspicion around Belgian security-linked theories, but do not identify the Brabant Killers.
The file moves under federal judicial authority. Police and prosecutors issue renewed public appeals, including attempts to identify persons of interest from old images and descriptions.
On June 28, 2024, the federal prosecutor announced that active investigative avenues had not produced the truth. In 2025 and 2026, reporting and parliamentary records show additional requested investigative acts around a licence-plate lead and the French Sliman-brothers lead, but no public breakthrough identifying the killers.
The existence of the attacks, their 1982–1985 window, the 28-death toll, the Aalst massacre, and the failure to identify perpetrators are supported by police, Belgian reporting, and research records.
The federal prosecutor announced the exhaustion of active lines in June 2024. Later public reporting and Belgian parliamentary records show additional investigative acts were requested or discussed, especially around a licence-plate lead and the Sliman brothers.
The low financial returns and extreme violence make the destabilisation theory plausible as an interpretation. It remains an interpretation unless tied to proven command, motive, and perpetrators.
Stay-behind networks were real, and far-right or security-service adjacency has long been part of the debate. The available public record does not establish that Gladio ordered, planned, or executed the Brabant killings.
Multiple suspects and theories have circulated, including former gendarmes, criminal networks, far-right actors, and the Sliman brothers. None has produced a public judicial identification of the perpetrators.
The case contains features that fuel suspicion: professional weapon handling, apparent knowledge of response patterns, the mismatch between violence and proceeds, investigative failures, and the broader Cold War record of clandestine networks and far-right activity in Europe.
Suspicion does not establish chain of command. The public record does not show an authenticated order, proven operational cell, confirmed perpetrator identity, or judicial finding that Gladio directed the murders.
Reader guardrail: this file treats Gladio as a documented historical context and a contested investigative hypothesis, not as the solved answer to the Brabant Killers case.
The sequence of material events
Armed robbery at a Delhaize supermarket in Maubeuge. First known attack attributed to the gang. No fatalities.
Robbery at a Colruyt supermarket in Nivelles. Guards shot. The pattern of disproportionate violence begins to establish itself.
Further supermarket robberies across Brabant province. The gang is described as comprising at least three individuals: a large man known as the Giant, a smaller figure known as the Killer, and a third described as the Old Man. The gang repeatedly shoots witnesses and bystanders who present no threat.
Robbery at a weapons shop in Wavre. Military-grade weapons and ammunition stolen. The gang's access to firearms upgrades significantly after this point.
Attack on a Colruyt supermarket in Overijse. Two security guards killed. A customer shot dead at close range despite offering no resistance. The gratuitous nature of the violence intensifies investigator concern that robbery is not the primary motive.
Multiple further attacks. The gang demonstrates knowledge of police response times and security procedures that investigators later note is consistent with either insider information or surveillance assistance.
Attack on a Delhaize supermarket in Aalst. Eight people killed including two children. The worst single attack of the campaign. The gang fires indiscriminately at shoppers — the cash taken is minimal relative to the carnage inflicted.
Attack on a Delhaize supermarket in Liège. Three more killed. A gendarmerie officer is among those murdered, shot with a weapon later identified as belonging to the Belgian gendarmerie's own armoury — a detail that becomes central to later investigations.
Final documented attack. After this point, the gang ceases operations entirely. No explanation for the cessation has ever been established.
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Registered claims and their evidential status
The finding is limited to the cited record and the stated evidence boundary.
The finding is limited to the cited record and the stated evidence boundary.
The finding is limited to the cited record and the stated evidence boundary.
The finding is limited to the cited record and the stated evidence boundary.
The Brabant Killers campaign remains unresolved. The killings, the terror effect, the investigative failures, and the later closure attempt are well documented. The strongest supported conclusion is that the attacks cannot be reduced confidently to ordinary robbery and that the Belgian state failed to produce a conclusive answer after decades of investigation.
The Gladio connection is more limited. Operation Gladio and Belgian stay-behind structures are real historical subjects, and their exposure explains why the Brabant case became attached to theories of strategy-of-tension politics. But the available public evidence does not prove that Gladio, NATO, or Belgian state authorities controlled the Brabant Killers. The correct verdict is therefore Unresolved.
Primary, institutional and independent source trail
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