No charges for officer over shooting of Black man

Authorities in the US state of Wisconsin say no charges will be filed over a police officer's shooting a Black man in the back last summer.

The district attorney of Kenosha County spoke to reporters on Tuesday about the shooting of Jacob Blake seven times in the back by the officer in Kenosha last August. Blake suffered serious injuries.

The district attorney said the officer was cleared of criminal charges because his claim that he acted in self-defense cannot be disproved. The officer said Blake was armed with a knife and that he feared being stabbed when Blake turned to him.

Blake's uncle expressed anger over the decision, saying it was based on racial discrimination.

In Kenosha, criticism is mounting and there are calls for protests.

Wisconsin Governor Tony Evers authorized the deployment of about 500 National Guard troops to help maintain order.

Protest rallies were held across the United States after the death of another Black man, George Floyd, in police custody in Minnesota last May.