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Nearly nine years after the killings of two United Nations investigators in the Kasai region of the Democratic Republic of Congo, the country’s High Military Court has imposed a death sentence on an army colonel found guilty of helping orchestrate the crime, a ruling that has reignited debate over whether state actors played a role in the murders.
The court in Kinshasa convicted Colonel Jean de Dieu Mambweni of the war crime of murder, concluding that he actively participated in a conspiracy that led to the deaths of U.N. experts Michael Sharp of the United States and Zaida Catalan, a Swedish-Chilean investigator. The judgment followed an appeal by military prosecutors who argued that Mambweni’s responsibility went far beyond the offenses for which he was originally convicted.
In the initial 2022 trial, Mambweni received a 10-year prison sentence for failing to assist people in danger and violating military orders. Prosecutors challenged that ruling, insisting that evidence presented during the proceedings showed a more direct role in the killings. The appeal court agreed and imposed the harsher penalty.
Although the sentence carries the death penalty, Congo has observed a de facto moratorium on executions since 2003. As a result, the punishment is expected to be converted into life imprisonment in practice.
Sharp and Catalan were investigating reports of mass atrocities linked to the conflict between government forces and the Kamuina Nsapu militia in the Kasai region when they disappeared on March 12, 2017. The pair were intercepted near the village of Moyo-Musila, taken into nearby bushland and shot dead. Their bodies were discovered more than two weeks later, sparking international outrage and calls for an independent investigation.
The latest ruling also confirmed death sentences previously handed down against dozens of militia members accused of involvement in the murders, bringing one of Congo’s most closely watched judicial proceedings closer to its conclusion.
From the outset, Congolese authorities largely blamed the killings on militia fighters. However, suspicions persisted that government officials may have been involved. Investigators later arrested Mambweni and other officials, alleging that some had maintained links with the rebels operating in the region.
Elizabeth Morseby, Catalan’s sister, welcomed the court’s acknowledgment that the murders resulted from a conspiracy rather than an isolated act of violence. “This confirms that Zaida and Michael were not simply victims of a random act of violence,” she said.
Nevertheless, Morseby argued that the search for truth remains unfinished. She pointed to recordings presented during the trial in which Mambweni allegedly expressed fears that the U.N. investigators could expose mass graves and implicate authorities in efforts to conceal evidence. According to her, “true accountability requires not only convictions, but a full understanding of how and why these crimes were allowed to happen”. She also maintained that the colonel appeared to have had no personal motive to target the investigators.
Human rights organizations have also questioned whether the judicial process fully examined the role of state institutions. Earlier this year, Human Rights Watch said evidence suggesting government agents helped guide the U.N. experts toward the location where they were ambushed was not adequately considered during earlier proceedings.
Paul Nsapu Mukulu, president of Congo’s National Human Rights Commission, echoed concerns that additional actors may have been involved. “All the evidence suggests that the double murder of the U.N. experts constitutes a state crime, and a state crime is not easily dealt with,” he said.
While the verdict marks a significant milestone in a case that has troubled Congo and the international community for nearly a decade, relatives of the victims and human rights advocates continue to call for further investigations to determine whether higher-ranking officials played a role in planning or facilitating the killings.
By: Andrews Kwesi Yeboah