Story highlights ISIS claims responsibility, though its account differs from ousted government's

At least 15 people were killed in the attack, according to the UAE's official news agency

The war in Yemen has left at least 4,000 civilians dead, according to Houthi rebels

(CNN) Explosions rocked a southern Yemeni hotel that houses members of deposed President Abdu Rabu Mansour Hadi's government, officials said, in a deadly attack Tuesday that drew conflicting accounts about the weapons used and who was behind it.

At least 15 people were killed in the attack on the Al Qasr Hotel in Aden, according to WAM, the news agency for the United Arab Emirates.

All Yemeni government officials staying at the hotel -- including Prime Minister Khaled Bahah -- were unharmed and evacuated, Transport Minister Badr Basalma told CNN.

Four UAE soldiers were among the dead, WAM said. And the Saudi official press agency SPA said one Saudi soldier died. Both countries have contributed troops in a battle against Yemen's Houthi rebels, hoping to restore Hadi to power.

Information about what exploded, and who was responsible, varied.

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