[JURIST] Amnesty International [official website] said Saturday that Sudan has arrested and mistreated a human rights lawyer documenting the killing of 30 people in refugee camps outside of Khartoum last May. Amnesty considers the lawyer to be a prisoner of conscience, detained solely for his work in defense of human rights. The Sudanese government has denied firing upon refugees during the May incident, through witnesses claim they lost relatives to gunshot wounds. Amnesty claims the lawyer has been charged with waging war against the state, murder and undermining the constitutional system, two of which could incur the death penalty. Sudan previously suspended an independent newspaper for publishing reports on the encounter, and has arrested hundreds for their involvement. Earlier this year, Sudan was sharply criticised by human rights groups [JURIST report] for arresting refugee aid workers associated with Doctors without Borders [official website]. Reuters has more.