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.

At least 16 people died after Kenyan police cracked down on anti-government protests across the country on Wednesday, human-rights groups said.

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.