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Global brands ‘likely’ using mineral that funds rebels accused of atrocities in DRC, investigation finds

Global Brands Suspected of Using Conflict-Linked Coltan Investigation Reveals Supply Chains Tainted by Rebel Funding Global brands likely using mineral that

Desk Global Development
Published June 10, 2026
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Global Brands Suspected of Using Conflict-Linked Coltan

Investigation Reveals Supply Chains Tainted by Rebel Funding

Global brands likely using mineral that – A year-long investigation by Global Witness has uncovered that major global brands, including Amazon, Ericsson, and Sony, may be indirectly financing a militia in the Democratic Republic of the Congo (DRC) accused of severe human rights violations. The report suggests these companies are suspected of sourcing coltan—a critical mineral used in electronics—through supply chains linked to the M23 rebel group, which has been responsible for widespread sexual violence, summary executions, and torture in eastern DRC. The findings raise concerns about the role of multinational corporations in perpetuating conflict through the procurement of minerals from contested regions.

M23’s Control Over Key Mining Areas

The M23 militia, supported by up to 7,000 Rwandan troops stationed within the DRC, seized control of coltan mines in the North Kivu province two years ago. This strategic occupation has enabled the group to extract significant revenue, with the UN’s experts estimating that the militia collects nearly £600,000 monthly from taxation on coltan mined in the Rubaya site. This income fuels further violence, including the killing of thousands of civilians and the displacement of hundreds of thousands, as well as systematic rape and abduction.

Coltan’s Journey Across Borders

Coltan, essential for manufacturing mobile phones and computers, is being smuggled from DRC’s mines to Rwanda. According to the investigation, five out of seven major Rwandan coltan exporters reportedly purchase the mineral from the DRC, then distribute it through intermediaries to smelters in China and Kazakhstan. From there, the processed tantalum is integrated into electronic components, ultimately ending up in consumer products. This chain of trade has created a pathway for conflict minerals to infiltrate global supply chains without clear accountability.

Smuggling Routes and Government Involvement

Previously, coltan was funneled into Rwanda via loosely regulated border crossings. However, recent sources indicate that a growing volume of the mineral now enters the country through Goma, the DRC border city captured by M23 last year. A smuggler interviewed by Global Witness claimed that Rwandan authorities were aware of the mineral’s flow but did not intervene. This alleged complicity suggests that government officials may be enabling the militia’s financial operations, despite Rwanda’s public denial of support.

Traceability Systems in Question

Global Witness criticized the International Tin Supply Chain Initiative (Itsci), a traceability framework used by many companies to ensure conflict-free sourcing. The report argues that this system has failed to identify conflict coltan, allowing it to persist in the market. Similarly, the Responsible Minerals Initiative (RMI) is accused of not being able to detect the mineral’s entry into supply chains. Alex Kopp, a senior policy and advocacy adviser at Global Witness, stated: “Behind our everyday tech lies a supply chain tainted by violence, exploitation, and human suffering.” He emphasized the need for stricter oversight and direct verification of mineral origins to break the cycle of conflict financing.

Corporate Responsibility and Call for Action

The investigation highlights a lack of due diligence among international companies, which have not fully cleaned up their supply chains. Kopp urged businesses to halt purchases of coltan from Rwanda until the M23 militia withdraws troops from Rubaya mines, or to ensure the mineral is thoroughly vetted before export. This includes verifying its source and grading to prevent it from being used to fund ongoing atrocities. The report underscores the urgency for corporate accountability, as the mineral’s flow continues to sustain instability in the region.

Impact on Communities and Global Demand

The widespread use of coltan has created a lucrative market for conflict minerals, with Rwanda emerging as a key beneficiary. The mineral has become one of the country’s largest export earners, despite its association with violence. The report notes that the DRC’s Rubaya site alone holds approximately 15% of the world’s coltan reserves, making it a strategic target for rebel groups. As global demand for electronics grows, so does the reliance on these conflict-linked resources, perpetuating cycles of exploitation and suffering for local populations.

Responses from Affected Companies

Following the release of the findings, companies involved in the coltan supply chain were invited to comment. An Amazon representative, Margaret Callahan, stated: “We’re committed to providing products and services that are produced or supplied in a way that respects human rights and the environment—in accordance with our supply-chain standards and all applicable laws.” While acknowledging their efforts, the spokesperson admitted the need for further scrutiny. Other firms, including Ericsson and Sony, have similarly emphasized their adherence to ethical sourcing practices, though the investigation challenges their ability to fully trace the mineral’s origins.

Broader Implications for Global Trade

The report’s findings extend beyond the DRC, implicating brands such as Microsoft, Toyota, Nvidia, and Vodafone in the indirect funding of M23. These companies may have unknowingly acquired coltan from mines under rebel control, as the traceability systems designed to prevent such practices have proven inadequate. The investigation calls for a reevaluation of global supply chain policies, urging governments and businesses to prioritize transparency and human rights in mineral procurement. Without intervention, the cycle of conflict and exploitation is likely to continue, with the suffering of eastern DRC communities remaining largely unaddressed.

The M23’s occupation of Rubaya has not only secured a steady revenue stream for the militia but has also placed Rwanda in a complex position. While the government denies backing the group, the mineral’s export value has grown significantly, reflecting its importance to the regional economy. The investigation suggests that Rwanda’s denial may be overshadowed by its continued reliance on coltan taxation, which sustains the M23’s operations. This duality raises questions about the extent of Rwanda’s involvement and the effectiveness of current international frameworks in curbing conflict financing.

Global Witness’s report emphasizes the interconnectedness of global markets and local conflicts. By tracing the mineral’s journey from DRC to Rwanda and finally into consumer electronics, the organization has exposed vulnerabilities in supply chain management. The findings call for a more rigorous approach to mineral sourcing, with companies required to conduct independent audits and publicly disclose their supply chain practices. Such measures, the report argues, could disrupt the flow of conflict minerals and reduce the financial incentives for violence in eastern DRC.

As the investigation unfolds, it adds to a growing body of evidence linking global brands to conflict in the DRC. The report’s implications are far-reaching, challenging the notion that multinational corporations can operate ethically without scrutinizing their raw material sources. By highlighting the role of coltan in funding atrocities, Global Witness aims to pressure companies into taking greater responsibility for their supply chains and advocating for peace in the region. The fight against conflict minerals, therefore, is not just a matter of corporate ethics but a critical step toward addressing the humanitarian crisis in eastern DRC.

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