A group of Kenyan Muslims travelling on a bus ambushed by Islamist gunmen protected Christian passengers by refusing to be split into groups, according to eyewitnesses.
The Muslims told the militants "to kill us together or leave us alone", a local governor told Kenyan media.
At least two people were killed in the attack, near the north-eastern village of El Wak on the Somali border.
The Somali based al-Shabab group is the main suspect for the attack.
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