ADEN, Yemen, Nov. 25 (Xinhua) -- A security official of Yemen's Criminal Investigation Department (CID) was assassinated by unknown assailants in the southern port city of Aden on Saturday, according to a local police source.
Unidentified assailants opened fire on Colonel Mohamed Abdu, an official of the Criminal Investigation Department in Aden's neighborhood of Shaykh Othman, and fled the scene unscathed, the police source said on condition of anonymity.
No militant group has yet claimed responsibility for the attack that resulted in killing the Yemeni security official.
Saturday's killing came several days after an IS-claimed suicide car bombing targeted the CID building in Aden and killed more than 47 people.
The southern port city of Aden is considered as Yemen's temporary capital and the Saudi-backed Yemeni government based itself there since 2015.
During the past two years, the al-Qaida in the Arabian Peninsula (AQAP) and other terrorist groups including the Islamic State had an active presence in Yemen's southern part.
The impoverished Arab country has been locked into a civil war since the Iranian-backed Shiite Houthi rebels overran much of the country militarily and seized all northern provinces, including capital Sanaa, in 2014.
Saudi Arabia leads an Arab military coalition that intervened in Yemen in 2015 to support the government of President Abd-Rabbu Mansour Hadi after Iran-backed Houthi rebels forced him into exile.
The United Nations has listed Yemen as the world's number one humanitarian crisis, with seven million Yemenis on the brink of famine and cholera causing more than 2,000 deaths.
