West Virginia woman with pistol shoots, kills man firing at graduation party: 'Saved several lives'

A woman in West Virginia fatally shot a man Wednesday night who had begun firing an AR-15-style rifle into a crowd of dozens. 
Charleston Police identified the man as 37-year-old Dennis Butler. 

The people were attending a birthday and graduation party outside a Renaissance Circle apartment complex. 

Butler had been at the apartment complex earlier in the evening in a vehicle and was warned to slow down because children were playing, according to authorities. 

He left but later returned and parked in front of the complex before shooting.