VIDEO: Fears of Boko Haram in Cameroon

Gunmen have broken into a prison in central Nigeria and freed about 200 prisoners.It is not yet clear if the Islamist group Boko Haram was responsible but it has orchestrated several prison raids and controls a number of towns in north eastern Nigeria.

It has also been carrying out attacks across the border in Cameroon.Thomas Fessy reports on the Cameroon Army's efforts to defeat the Islamists.

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