The main rebel group in eastern Democratic Republic of Congo, the M23, has walked away from peace talks with the government, saying it will not return unless the authorities adhere to a previous ceasefire deal.

M23, a rebel group backed by Rwanda, killed at least 140 people in July in the Democratic Republic of Congo, Human Rights Watch said. Most victims are Hutu.

The Democratic Republic of Congo and Rwanda-backed M23 rebels were meant to finalise a peace agreement by August 18, according to an earlier commitment signed in July. Though the two parties have missed the deadline,