General Nasser Naji bin Farid, commander of military forces in central Yemen, was killed on Saturday in an ambush, army and tribal sources said, blaming Al-Qaeda.
"The convoy of General Bin Farid was attacked near Marib by armed men," a military source said of the incident in the city, 140 kilometres (87 miles) east of Sanaa, adding that another officer, Colonel Hamid al-Qaher, was also killed.
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Another two officers were killed and six soldiers were wounded in the attack, said a security source. The gunmen seized two vehicles and several firearms, a tribal source added.
Both sources said the attack bears the hallmark of Al-Qaeda.
The militant group has carried out multiple attacks against the army and security services, mostly in south and east Yemen where it is well-established.