South Carolina cop fired after allegedly shooting a black man in the back

North Charleston Mayor Keith Summey says the white police officer who fatally shot a black man has been fired.

Summey made the announcement during a news conference Wednesday that was frequently interrupting by demonstrators chanting "no justice, no peace." Widely circulated video of the shooting shows Officer Michael Slager shooting eight times into the back of 50-year-old Walter Scott.

Police Chief Eddie Driggers said he was "sickened" watching video that was taken by an unidentified witness.

Summey did not answer many questions about what happened before the shooting, saying that was part of state law enforcement's investigation. He did say that there is dash-cam video of the traffic stop before the shooting, but he has not seen it and it has not been released to the public.

Summey says the officer's wife is eight months pregnant and the city will cover her insurance until after the baby is born.