A UN investigator says army troops in the Democratic Republic of Congo shot and beat to death about 50 Rwandans in April and burnt their refugee camp. In a report, Philip Alston said about 40 women were also abducted and it prompted a revenge massacre by Rwandan Hutu militia. The report said military operations this year carried out by the army supported by UN peacekeepers in the east had produced catastrophic results. The UN expert said the UN Security Council had transformed the peacekeeping force into a party to the conflict. Earlier this week a joint report by several international aid agencies said the offensive against the Hutu FDLR rebels in the east had had disastrous humanitarian consequences.<br/>