M23 rebels in the eastern Democratic Republic of Congo have threatened to re-invade the city of Goma after a new United Nations report revealed Rwandan military leaders aiding the insurgents.

Last Friday, Reuters reported that U.N. experts believed the rebel group, which got it's name from the March 23 Movement, recruits soldiers in Rwanda.

Now, the group appears to be stepping up its saber-rattling.

"We shall retake the town of Goma because the Kinshasa government does not want to respond to our demands," a senior officer of the M23 told the Chinese news agency Xinhua.

M23 occupied Goma last November for 10 days, but withdrew to begin talks with the DR Congolese government of President Joseph Kabila in Kampala, Uganda.