A force of Ethiopian troops crossed into South Sudan on April 20 to launch a joint offensive with the Juba government against ethnic Murle militia fighters who staged a bloody raid into Ethiopia's Gambela region a week earlier. The Murle militiamen attacked several villages and massacred over 200 civilians of the Nuer ethnicity in the raid, and abducted some 100 children as well as stealing some 2,000 cattle. News reports initially described the incursion as a cattle raid, but the militiamen were said to be armed with AK-47s and wearing uniforms. Hundreds of thousands of South Sudanese, mainly Nuer, have fled to Gambela to escape armed conflict. The raid has heightened fears of the South Sudan war spilling into Ethiopia. (Ethiopian Herald via AllAfrica, DW, April 22; Radio Tamazuj, Sudan, April 20)