Here’s a piece that tells of evidence and testimony. The police have been quickly open and informative about the case, so there will probably be more.
Man charged in two KC killings, suspect in three more: ‘They didn’t see it coming’
http://www.kansascity.com/news/local/crime/article170048557.html
The killer was becoming bolder and bolder.
The gun and bullets were probably stolen.
Apparently, the mom knew nothing about it.