After the shooting death of Karolina Huebner-Makurat, operations of existing injection sites are under "review" and some will be mandated to close after the Ontario government took steps to make necessary reforms. The Toronto community surrounding this particular site has launched a class action law suit.
Here is the official story: https://nationalpost.com/feature/inside-the-battle-over-unsafe-injection-crime-and-murder
There is currently a legal challenge in Ontario under the Ontario Human Rights Code to oppose the decision to close these sites.