At least nine people were killed and 10 injured Sunday when a group of gunmen opened fire at an army bus in Yemen, an official said.
"Masked armed men ambushed an armed forces bus in Aden governorate's Sheikh Othman, which led to the killing of nine people, including high-ranking officers," the official told Xinhua.
"The bus carrying military and medical officers was targeted while heading towards a military hospital in Aden," the official added.
