Oh dear. Kenya again feeling the brunt of Islamist extremism:

Gunmen from the Somali militant group al-Shabab say they have attacked a bus in northern Kenya, killing 28 people.

The bus was travelling to the capital, Nairobi, when it was stopped in Mandera county, not far from the Somali border.

Gunmen separated out non-Muslims by asking passengers to read from the Koran, officials and witnesses said. Those who failed were then shot in the head.