South Carolina shooting: Dash cam footage released

South Carolina officials have released a new video showing the moments before a US police officer fatally shot an unarmed man in the back.

The dash cam footage shows Walter Scott's car being pulled over and Officer Michael Slager asking for his paperwork.

After Mr Slager returns to his police vehicle, Scott opens his door and runs.

Mr Slager was arrested on murder charges after a video surfaced showing him shooting at Scott as he flees.