Officially, Renick is charged with first degree murder, armed criminal action, and unlawful possession of a firearm. There is no word on what the next steps are, regarding the other murder investigations. He is being held on a $500,000 bond.
https://www.latimes.com/world-nation/story/2019-08-30/man-charged-in-first-case-in-string-of-child-homicides-in-st-louis
https://www.cnn.com/2019/08/26/us/st-louis-shooting-children-victims/index.html
https://www.cnn.com/2019/08/30/us/st-louis-child-shooting-arrest/index.html
https://www.stltoday.com/news/local/crime-and-courts/year-old-girl-among-three-killed-saturday-night/article_688445e2-67ab-54c5-9d11-d1eafe750443.html