sentences:  In recent years the armed wing of the Ogaden National Liberation Front (ONLF) has been active, and the rebel group has stated that they will not allow the resources of the region to be exploited, urging international oil companies not to sign agreements with the Ethiopian government.On April 24, 2007, members of the ONLF attacked and destroyed an oil exploration facility within the basin near Obala and Abole, killing approximately 65 Ethiopians and 9 Chinese nationals in the Abole raid.The facility was being operated by the Chinese Zhongyuan Petroleum Exploration Bureau, a subsidiary of Sinopec, on behalf of Petronas.