A military official said it was unclear whether the attack had been carried out by al-Qaeda or ISIS, both of which have gained ground in the south.

A suicide bomber rammed his vehicle into a large group of army reinforcements in south Yemen on Sunday, killing at least 10 soldiers, an Al Arabiya News Channel correspondent reported.

Another seven soldiers were wounded in the attack targeting troops who had been sent from the main southern city of Aden to Lahij province to fight extremists, the sources said.

A military official said it was unclear whether the attack had been carried out by al-Qaeda or ISIS, both of which have gained ground in the south and claimed deadly anti-government assaults in the past.

Late on Saturday, coalition jets attacked Al-Qaeda positions in Abyan’s provincial capital of Zinjibar and in the nearby town of Jaar, military sources said.

Government forces backed by the Arab coalition began an all-out offensive in March against jihadists in south Yemen, recapturing main cities they had held.

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