Jacksonville, FL: Massacre Averted?

3/10/16 CBS Jacksonville:

JACKSONVILLE, Fla. —
A man was arrested and charged with one count of murder after officers said he shot and killed his former supervisor at a landscaping business near The Avenues Mall on Wednesday....

Little was a supervisor and 20-year employee at the landscaping business. Officers said Lopez shot Little once in the back.

A bullet also grazed Little's cheek. There was a struggle, then Lopez's gun malfunctioned. 

Little died at the scene.

Lopez heard sirens and tried to run.

Joshua Curry worked with Lopez and said he grabbed his gun from his car after he heard his co-workers yell "active shooter!" He said he held Lopez at gunpoint until police arrived.