The 2007–2008 Ethiopian crackdown in Ogaden was a campaign involving the Ethiopian Army on the offensive against the rebel Ogaden National Liberation Front (ONLF). The crackdown against the guerrillas began after they killed 74 people in an attack on a Chinese-run oil exploration field in April 2007. The main military operations were centered around the towns of Degehabur, Kebri Dahar, Werder and Shilavo in Ogaden, which are in the Ethiopian Somali Region. The area is home to the Ogaden clan, seen as the bedrock of support to the ONLF.