A Congolese police officer is seen through a hole in the wall of a cell at Muzenze prison on Nov. 21 in Goma. Almost all the inmates of Goma's main prison managed to break out after wardens abandoned their positions to flee from the advancing rebels on Nov. 19. The M23 now controls all of Goma and nearby crossing points on the border with Rwanda. A spokesman for the group called on Wednesday for President Joseph Kabila to step down, saying he was not the legitimate winner of elections last year.

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