Geneva ? A U.N. human rights team criticized the international community Monday for failing to halt atrocities in Darfur, saying in a sharply worded report that the United Nations must act now to protect civilians from a violence campaign orchestrated by Sudan’s government.

The panel, headed by Nobel peace laureate Jody Williams, departed from the usual diplomatic niceties of U.N. reports to accuse major nations of letting Sudan obstruct efforts to quell ethnic fighting that has killed 200,000 people and displaced 2.5 million in four years.

The report urged quick U.N. Security Council intervention, the imposition of sanctions and criminal prosecutions of those responsible for atrocities and other abuses.

“Killing of civilians remains widespread, including in large-scale attacks. Rape and sexual violence are widespread and systematic. Torture continues,” it said, adding that rebel groups were behind some abuses but blaming most crimes on the government and its allies.

Sudan’s delegation at the U.N. Human Rights Council meeting declined to comment, saying they would not discuss the report until addressing the body today. Sudanese leaders have denied encouraging violence in Darfur, an arid region with long conflicts over water and arable land.