SANAA, Yemen — Yemeni security officials say a huge explosion has killed the governor of Aden and six of his bodyguards.

The officials say Gov. Gaafar Mohamed Saad was traveling to his office in a convoy on Sunday morning when the explosion took place in the Rimbaud area of the southern port city. Authorities are investigating the exact cause of the explosion.

The officials spoke on condition of anonymity because they are not authorized to brief the media.

Pro-government forces backed by a Saudi-led coalition drove Shiite Houthi rebels out of Aden earlier this year. A local al-Qaida affiliate has exploited the chaos of Yemen’s conflict to seize territory in the country’s south and east, and has a growing presence in Aden.

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