Al Shabab killed at least 13 people and wounded many others with a bomb attack on Jazeera hotel in Somalian capital of Mogadishu on Sunday.
The hotel, where numerous foreign diplomats stayed, has been targeted several times before.
"We have carried 13 dead people and 21 others who were injured, some seriously," said a health worker, Abdikadir Abdirahman, speaking about the latest attack.
According to security authorities, a suicide bomber drove a car packed with explosives through the hotel gate near International Mogadishu Airport and exploded it.
"It is a response to attacks and helicopter bombing against al Shabaab by AMISOM and the Somali government," said al Shabaab's military operations spokesman, Sheikh Abdiasis Abu Musab.
Al Shabab have been designated as a terrorist organisation by the United States, the United Kingdom, Turkey, the United Arab Emirates as well as NATO.
Since Al Shabab militants have been driven out of many regions they once controlled over the African territory, including Mogadishu, they have carried out violent attacks targeting government officials and civilians.