San Francisco shooting: Four people dead and several injured after attack at UPS delivery warehouse

A massive police presence has responded after a man open fired at a UPS facility, killing at least four people and injuring several others."It's fluid right now", Brent Andrew, a hospital spokesperson, told the San Francisco Chronicle regarding the number of victims and injuries."I was sick to my stomach, seeing those bodies", the man, who the San Francisco Chronicle identified only as Chino, said.