Update | Attacks leave 13 dead as Kenya marks 50th anniversary of independence
Thirteen people have been killed in four attacks in Kenya - one of which targeted tourists - during week-long celebrations to mark the country's 50th anniversary of independence.

Thirteen people have been killed in four attacks in Kenya - one of which targeted tourists - during week-long celebrations to mark the country's 50th anniversary of independence.
The most recent attack was an explosion on a Nairobi bus that killed four on Saturday.

Kenya has been the target of sustained attacks since the army sent troops into neighbouring Somalia to fight the country's al-Qaeda-linked al-Shabab insurgents in October 2011.
Eastern Kenya, along the 700-kilometre border with Somalia, has been particularly hard-hit.
Experts are reluctant to draw any link between the armed conflict with al-Shabab and the latest series of attacks. One Western observer said there was "no evidence" yet to link the attacks.