No matter what, these are 5 lives that are now gone, he should be at least prosecuted and sentenced to life imprisonment.
He's dead. He shot himself before the police turned up.
Oh, didn't notice that the article mentioned "Including the suspect". His kills are extremely frustrating, which even included a 3-year-old girl, two dog walkers, it just looks like he went on killing people with no ordinary motive, just his messed up mental health.