Prior to the July assaults, Ntaganda and other rebel commanders flew to Rwanda to meet with Kabarebe, the Rwandan defense minister, the report said.
The report said that Rwandan soldiers and M23 rebels communicate through commercial radio sets that the rebels obtained while in the Congolese armed forces. The Congolese military has thus been able to intercept several communications between Rwandan soldiers and M23 combatants, the experts said. One member of the U.N. Group of Experts witnessed an M23 commander communicating by radio with Rwandan troops for reinforcements.
Earlier Wednesday, the U.N.’s special representative for Congo said the 19,000-strong U.N. peacekeeping force there is being stretched thin by multiple rebel militias in the eastern part of the country, including Goma.
Roger Meece made the assessment in a live videoconference linkup to the Security Council from Kinshasa.
The council is assessing the performance of the MONUSCO peacekeeping force after 1,500 of its troops stood by Tuesday and let M23 rebels take Goma without resistance.
U.N. helicopters over the weekend fired hundreds of rockets at the rebels in a bid to slow their advance on the city of 1 million.
But U.N. officials say the U.N. force commander in Goma ordered the peacekeepers not to shoot Tuesday in order to avoid provoking a major firefight in the city after Congolese troops retreated.
Meece said the M23 rebels were ‘‘well provisioned,’’ uniformed and supplied with weapons, including night-vision goggles, which clearly came from some outside party.
He did not name Rwanda or Uganda.
On the Web: www.un.org/ga/search/view_doc.asp?symbol(equals)S/2012/843