Rwandan President Paul Kagame has told CNN he doesn’t know if his country’s troops are in the east of the Democratic Republic of Congo (DRC), where fighting between the M23 armed group and Congolese soldiers has killed more than 700 people and injured thousands in recent days.

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The Congolese government, alongside U.N. officials and Western powers, including the United States, has accused neighbouring Rwanda of exacerbating the conflict by deploying thousands of troops and heavy weaponry in support of M23.

Rwanda is facing mounting international pressure over its role in the conflict in eastern Democratic Republic of Congo as the M23 rebel group continues to push southward toward the South Kivu provincial capital Bukavu after capturing the eastern city of Goma.

Rwandan-backed armed group M23 announced a humanitarian "ceasefire" from Tuesday in DR Congo's perennially explosive east, days before a planned crisis meeting between Congolese President Felix Tshisekedi and Rwandan President Paul Kagame.