In a statement issued on 20 December 2025, the ministry said SSPDF Division V swiftly arrested the suspect following the killing of Mr. Bol Rhoch Mayol Koul, a South Sudanese national who served with the United Nations Mission in South Sudan (UNMISS) as a language assistant. Mr. Koul was killed on 15 December 2025 in Wau, the state capital.
“The Government affirms its full commitment to accountability and is taking decisive steps to ensure that those responsible are brought to justice in accordance with the law,” the ministry said, commending the leadership of SSPDF Division V for the quick apprehension of the suspect.
The statement did not disclose the identity of the suspect or provide details on the circumstances of the arrest, but emphasized that the process would proceed in line with national laws.
The arrest comes amid heightened scrutiny following the killing, which has drawn condemnation from both the government and the United Nations. The Ministry of Foreign Affairs and International Cooperation expressed “deepest condolence” to the family of the deceased and to UNMISS, and “unequivocally and categorically” condemned what it described as a heinous crime.
“Any attack against personnel serving with UNMISS or international organizations is unacceptable and constitutes a grave violation of the laws of the Republic of South Sudan,” the ministry said, reiterating the government’s commitment to cooperate with UNMISS on all matters related to the incident.
The government statement followed strong remarks from United Nations Secretary-General António Guterres, who called on South Sudanese authorities to ensure a swift and thorough investigation and to bring all perpetrators to justice. In a statement issued by his spokesperson, Guterres said Mr. Koul was forcibly detained by security actors near Wau town on 15 December before being killed while in custody.
The killing has raised concerns over the safety of humanitarian personnel and national staff operating in volatile environments across the country. UNMISS employs thousands of South Sudanese nationals in civilian roles, including language assistants who support peacekeeping operations and engagement with local communities.
While welcoming the reported arrest, observers say transparency and due process will be key in restoring confidence and ensuring justice. The Ministry of Foreign Affairs said the government remains committed to working closely with UNMISS as investigations continue, signalling that further updates may follow as legal proceedings advance.
