Kenya's Interior minister has denied that the police used excessive force during Wednesday's protests in which at least 10 people were killed, describing them as "terrorism disguised as dissent" and an "unconstitutional attempt" to change the government.

Sixteen people died during the nationwide demonstrations on Wednesday, according to Amnesty Kenya. Most of them were killed by police, the human rights group said.

A court in Kenya has given police 15 days to complete investigations of two police officers suspected of shooting and wounding a hawker during the latest street protests over the death of a blogger in custody.