A Yemeni senior army officer died on Thursday after targeting his car with an explosive device in the Mukalla city in the south, the defense ministry reported.
Brigadier Omer Salim Barashid, who held the post of director of leadership and staff colleague at the defense ministry, was seriously injured after the explosion that was believed to be planted inside his car while parked in the Bajuman area, it said.
He was admitted to hospital and died from his wounds, it added.
No one has claimed responsibility for the attack and the ministry said an investigation is underway.
Yemen, which is experiencing a democratic transition under a power-transfer deal sponsored and closely watched by the West, is facing increasing bombings including suicide ones as the country is continuing an extensive hunt for Al-Qaeda operatives.
In recent weeks, the authorities defused many bombs which were planned to target key installations in main cities including the capital Sanaa amid fragile security and persistent political and economic unrest.
In April and May, the Yemeni army launched a US-backed offensive against Al-Qaeda militants and retook control of key towns in Abyan and Shabwa. Hundreds of militants including senior leaders were killed and arrested in the offensive.
Al-Qaeda has carried out deadly attacks against military and security chiefs, personnel and offices in retaliation for the severe blows in Abyan and Shabwa provinces.