The Congolese government says it has opened an investigation into the killings of dozens of separatists by the security forces last month.
Human Rights Minister André Lite said police accused of looting the separatist leader’s residence were in custody awaiting trial.
The pressure group, Human Rights Watch, has accused the security forces of using excessive lethal force against the Bundu Dia Kongo group which wants to revive the giant ancient Kongo kingdom.
Ne Muanda Nsemi, a self-styled prophet who leads the group, was arrested last month after proclaiming himself president of the Democratic Republic of Congo in what he called a divine coup.
