Kenyan policemen killed near Somalia border

Gunmen have killed at least three Kenyan police officers in the latest attack in the north-eastern border region with Somalia, police say.

No-one has claimed responsibility for the attack in Wajir district, 100km (60 miles) from the border.
But Kenyan officials have blamed Somali militants for previous attacks.
There have been several attacks on police camps in the three months since Nairobi sent troops into Somalia to fight the al-Shabab Islamist group.