More details have emerged about the suicide bomber who blew himself at DusitD2 Hotel.

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According to the police, Mahir Khalid Riziki was linked to the Garissa University College attack that led to the deaths of at least 147 innocent people.

He went to Somalia between 2013 and 2014 where he is suspected to have undergone training with Al-Shabaab.

Intelligence agencies had been tracking his movements and had his photos.

It is not clear why authorities were not able to apprehend him before the Dusit attack.

His name was made public by the police after the Garissa attack.

Riziki was, according to law enforcement authorities, a member of Al Ayma, an elite unit of Al-Shabaab.