According to their organization, three United Nations service employees were injured when their vehicle came under fire in eastern Democratic Republic of the Congo on Wednesday.

Unidentified gunmen assaulted a vehicle of the United Nations Refugee Agency (UNHCR) in the Lubero area of North Kivu province. A military escort supplied by UN soldiers then led the personnel to safety, according to a UNHCR official.

“Humanitarian actors working in displacement circumstances should not be a target,” said Johannes van Gemund, the spokesperson.

Eastern Congo is home to a host of armed groups fighting over land and resources, and Congo’s underfunded army has struggled to contain the various threats, leaving civilians vulnerable to attack.

Lubero has seen fighting in recent years between ethnic militias, primarily from the Hutu and Nande groups.