I just heard on television that the deaths have not been confirmed, but maybe I'm mistaken
This is the suspected shooter:
https://www.geenstijl.nl/5146785/030-verdachte-gokmen-tanis-is-haatdemocraat/
Not clear yet.
https://www.zerohedge.com/news/2019-03-18/1-dead-multiple-injured-gunman-opens-fire-utrecht-tram
Geenstijl wrote that they received information from a source that he wanted to kill his sister-in-law.
Too much speculation, too little fact