After receiving evidence that al-Shabab is planning attacks in the country, Ethiopia has put its security forces on heightened alert, say officials.
Ethiopian Prime Minister Meles Zenawi has died from a sudden infection while recovering from an undisclosed illness at a hospital in Belgium.
The countries still need to resolve key border security issues to end hostilities, a mediator from the African Union said on Saturday.
Nkosazana Dlamini-Zuma has won a tightly contested vote to become the new head of the African Union Commission - the first woman to hold the post.
Sudan and South Sudan signed a security agreement which aims to defuse tensions over oil payments which officials had warned could spark a war.
The World Bank's vice-president for Africa says states should enhance inter-continental trade to fight off the impact of the eurozone crisis.
Four people, including two foreign tourists, have been kidnapped by gunmen, after an attack on a group in Ethopia's Afar region.
Kenya will end its campaign against the al-Shabaab rebels in Somalia when it is satisfied it has stripped the group of its capacity to attack.
Two grenade blasts killed one and wounded more than 20 in Nairobi, apparently in retaliation for Kenya's hunt for al-Shabaab insurgents in Somalia.
SA has bemoaned the suicide bomb attack that killed 70 people in Mogadishu, while Somalia's Prime Minister urged aid workers not to stay away.