The M23 rebels advanced a week ago into eastern Democratic Republic of Congo's second-largest city, which was rocked by looting and unrest as Congolese forces withdrew without a fight. The M23's capture of swathes of eastern Congo and valuable mineral deposits has fanned fears of a wider war and led the U.

M23 rebels in the Democratic Republic of Congo have captured the eastern city of Bukavu with the backing of Rwandan forces, the second major city in the mineral-rich Kivu region to fall in three weeks.

The U.N. Security Council unanimously adopted a resolution Friday demanding that the M23 rebels in eastern Congo immediately cease hostilities and withdraw from territories they have seized. The council also threatened sanctions on those who prolong the conflict.