Government names Abdirahim Abdullahi as one attacker ; his father is a government official . Kenyan government tweets that attack mastermind was Mohamed Mohamud . Al-Shabaab threatens `Twitter in Kenya .
Government names Abdirahim Abdullahi as one attacker ; his father is a government official . Kenyan government tweets that attack mastermind was Mohamed Mohamud . Al-Shabaab threatens `` another bloodbath '' in Kenya .