Two of the attackers named by a Kenyan military spokesman are known members of al-Hijra, a Kenyan extremist group affiliated with al-Shabaab, according to the former head of the United Nations Monitoring Group on Somalia.
More top news
Milder Atlantic air into the north with colder, Continental air into the south.
A report produced for the British government criticised the security at the Riu Imperial Marhaba hotel where 38 people were killed in 2015.
A second Scottish independence referendum is "even more likely" after Theresa May's Brexit speech, Nicola Sturgeon has said.