Those killed are said to be mostly soldiers from the United Arab Emirates (UAE) guarding the Qasr Hotel, where a number of officials from the former Yemeni regime, including fugitive former Prime Minister Khaled Bahah, were allegedly housed.
An unspecified number of individuals have also been wounded in the attacks.
It is not immediately clear if any of the fugitive former Yemeni officials said to be in the hotel are among the casualties.