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STORY: A grenade explosion in the centre of Nairobi on Monday evening killed one person and wounded at least ten, the second attack in the Kenyan capital within 24 hours, Nairobi Provincial Commissioner said.
The two grenade blasts came two days after the U.S. embassy in Kenya warned that an attack was imminent as the east African nation fights Islamist militants in neighbouring anarchic Somalia.
Kenyan emergency services rushed 18 people to hospital after the second grenade explosion.
The explosion occurred at a busy bus terminal in downtown Nairobi.
A grenade attack at a bar in Nairobi early on Monday morning wounded 13 patrons. No one immediately claimed responsibility for either blast.
Somalia's al Qaeda-linked al Shabaab rebels, who have mounted similar attacks in the past in Somalia and Uganda, had threatened major reprisals if Kenyan troops did not leave Somalia.