Four years after the end of the civil war, neighbouring nations and Congolese military and militias are involved in the illegal exploitation of resources, the report said.

It called for the Congo government to make regular reports on their efforts to stop the trade, which would form the basis for imposing sanctions, such as travel bans or the freezing of financial assets.

The experts said until Congo’s resource industries were brought firmly under state control it was impossible to ensure peace and security.