PHOTO: Police training center in Zliten, bombed on Thursday by the Islamic StateThe Islamic State has claimed responsibility for Thursday's suicide truck bombing on a police training centre in Libya that killed at least 60 people and wounded more than 200. "This operation is one in a series of the battle of Abu al-Mughira al-Qahtani, which will not stop until we liberate all Libya," the Islamic State's Tripoli group said in a statement. ISIS launched the "al-Qahtani battle" earlier in the week, attacking the Mediterranean oil ports of Sidra and Ras Lanuf in northern Libya. The assaults killed at least nine guards and a civilian and set oil tanks on fire. The Islamic State has expanded its presence in Libya this year amid fighting between rival militias and rival governments in the north African country.