The Coalition for the Defence of the Constitution (C64) has accused President Felix Tshisekedi of being responsible for a violent crackdown on opposition protesters in Kinshasa.
According to C64, the violence resulted in the death of a senior official and left several people injured during a protest march on September 15.
The coalition also condemned the use of private militias by President Tshisekedi's government to crack down on opposition activists.
C64 is demanding that all those responsible for human rights violations be brought to justice, including the perpetrators of Manassé Lomboto's murder.