I see the quotes I posted were pulled, I figured a short excerpt was okay.
Anyway, here’s a youtube and a comment about it from another site, not a news article.
https://www.youtube.com/watch?v=Go3qFykWsTs
I found another witness video that says he heard shots coming from different directions. Skip to 5:21 - if you click on this link it will lead you to that point of the video:
Maybe there was someone inside with a gun who trying to take down the shooter and was firing back (?). But now we have 2 eyewitnesses who said they heard shots from two different areas around the same time.
The killer was killed with a gun... Could that have been the shooting?