The article doesn't state what forced him to stop on purpose. That isn't a police report. It's not facts. It's a news story. They call them stories for a reason, because an author can make it sound any way they want.
The real concern I have is that more and more there is becoming a lack of personal responsibility and the media furthers that notion by always removing it from their stories. Tragedies like this can be avoided.
and eliminating criminals that cause events like this is the solution, not perfection. nobody is perfect.