Rwanda was blocked Saturday from its upcoming turn at the rotating presidency role in a Central African economic bloc.

Rwanda Sunday announced it was going to withdraw from the Economic Community of Central African States (ECCAS) over tensions with the Democratic Republic of Congo.

The Rwanda-backed M23 armed group seized large swaths of eastern Congo earlier this year, including its two biggest cities, with the offensive having led to a broader war between the two neighbors.

The office of Congolese President Felix Tshisekedi said in a statement that ECCAS members had “acknowledged the aggression against the Democratic Republic of Congo by Rwanda and ordered the aggressor country to withdraw its troops from Congolese soil.”