(Adnkronos) – More than 1,500 civilians may have been massacred during an attack on Sudan’s largest refugee camp in April, in what would be the second largest war crime of the country’s catastrophic conflict. A Guardian investigation into the 72-hour attack by the paramilitary Rapid Support Forces (Rsf) on the Zamzam camp in North Darfur, the country’s largest for those displaced by the war, found repeated accounts of mass executions and large-scale kidnappings. Hundreds of civilians are still missing.