KINSHASA - A top opposition figure in the Democratic Republic of Congo wanted by the government on treason charges is seeking asylum in the South African embassy in neighboring Burundi, a spokesman for the Congolese government said on Saturday.

The government accuses Roger Lumbala, a Congolese MP and former rebel, of helping Rwanda support a rebellion in eastern Congo that has deepened political divisions in the capital Kinshasa, where the government and the opposition accuse each other of fanning the flames of the distant war.

The worsening political chaos threatens to undermine President Joseph Kabila's ability to push through reforms in the country - a potential mining and oil giant - after his reelection in flawed polls last year.

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