Democratic Republic of the Congo and Rwanda will sign peace deal on June 27

The agreement, which aims to end fighting in eastern Congo, will be signed in Washington in the US (Jacquelyn Martin/AP)

The Democratic Republic of the Congo and Rwanda will sign a peace agreement in Washington on June 27 that aims to ending fighting in eastern Congo, the two countries and the US state department said.

Congo has accused Rwanda of backing M23 rebels in its mineral-rich eastern region across the border with Rwanda. UN experts say the rebels are supported by about 4,000 troops from Rwanda, which has denied backing M23.