he attacker targeted St Polycarp's church on Juja Road.
A police spokesman blamed sympathisers of Somalia's al-Shabab Islamist militant group, angry over Kenya's involvement in peacekeeping activities.
A mob later rounded on Somalis living near the church with sticks and stones in a suspected revenge attack.
Police chief Moses Nyakwama told the BBC's Focus on Africa programme that 13 people had been injured in the revenge attack, in the suburb of Eastleigh.
'Running for their lives'
Reports suggested a number of those hurt at the church were injured in
http://www.bbc.co.uk/news/world-africa-19776747This is Sharia folks, remember Sharia is backed by this White House through the Muzziebrotherhood.
