A German of Somali origin is suspected to have been the suicide bomber who struck in Somalia's capital, Mogadishu, on Sunday, a Somali intelligence officer has told the BBC.
The male bomber was believed to have come from Bonn city, said the officer, who spoke on condition of anonymity as investigations were continuing.
The attack on the five-star Jazeera Palace Hotel killed 15 people.
Al-Shabab, which is linked to al-Qaeda, said it carried out the bombing.
A number of people from the US and Europe are known to have previously travelled to Somalia to join the group.
US President Barack Obama, who is visiting neighbouring Ethiopia and Kenya, condemned the attack.
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