High-profile websites including Google, Facebook and Twitter have been targeted by hackers in what is described as a "massively co-ordinated attack". Reports suggest the strike may have been aimed at a single user, pro-Georgian blogger known as Cyxymu. Twitter was taken offline for more than two hours whilst Facebook's service was "degraded", according to the firms.

Madagascar's army-backed leader is in Mozambique for emergency talks with three of his predecessors. The Indian Ocean island has been in a state of crisis since Andry Rajoelina forced the elected president, Marc Ravalomanana, to flee in March. The African Union called the takeover a coup and foreign aid has been frozen.

Six Botswana bushmen found guilty of hunting without a permit on their ancestral land have been set free with a caution, a lobby group says. Survival International said the "attempt by the Botswana government to punish Bushmen for hunting to feed their families has backfired". The San bushmen of the Kalahari have faced years of legal rows for the right to live on their ancestral lands.

US Secretary of State Hillary Clinton has described as disappointing Kenya's failure to investigate a bout of deadly violence after the 2007 election. Speaking in Nairobi on the first day of her African tour, Mrs Clinton urged the Kenyan authorities to end impunity. At least 1,300 people were killed in two months of violence, but the cabinet has resisted calls for a tribunal.

An offer of an amnesty for militants in Nigeria's oil-rich Niger Delta region has come into effect. In the next two months the government hopes about 10,000 rebels will exchange weapons for a pardon and retraining. But reports suggest few rebels have surrendered on the amnesty's opening day, and it is unclear how many armed groups will take part in the amnesty.