Congolese security forces on Tuesday tried to slow the advance of Rwanda-backed M23 rebels who say they have captured Goma after entering eastern Congo's largest city, as U.N. officials reported violence,

Protesters have attacked embassies in the Democratic Republic of Congo's Kinshasa over Rwanda-backed rebels fighting in Goma. Elian Peltier, an international correspondent for The New York Times, joins CBS News with the latest.

Residents of Goma reported gunfire and shelling after rebels overran Congolese troops. U.N. officials estimated that more than one million displaced people were now inside the city.