No mention that the “son” had been carrying a gun also, but I bet the chances are he was.
The original report was that he was carrying a gun. What was the employee supposed to do, wait til he was shot first and then shoot back?
Police said the robbery suspect's handgun was found at the scene. SOURCE.
He was carrying a gun according to another news article I read but his mother said he would not hurt anyone.
This report doesn’t say. It does mention that here were three robbers. That’s good enough. If I’m outnumbered 3 to 1, I’m in fear for my life. I’m almost certainly going to lose that fight and be at the mercy of three people who have demonstrated a willingness to break the law and commit acts of violence. Ergo, I’m in fear for my life and I will be responding with deadly force.