DR Congo's military is receiving weapons and training from multiple countries without notifying the United Nations as required by a 2004 resolution, according to a recent report to the Security Council.

Some of the weapons have fallen into the hands of armed groups operating in the east of the country, warns the confidential report by UN experts that was obtained by AFP on Thursday.

DR Congo and its military have not been subject to an arms embargo since 2008, though one still applies to armed groups.

The report noted that several countries "delivered significant quantities of arms, ammunition, equipment and military vehicles" to the military.

"Some of the material delivered to FARDC was later diverted to armed groups in eastern" DR Congo, the report continues.