Cameras

Hello, I am looking for a way to get into the building's security system. The reason is that my friend has committed suicide today by jumping from the roof of shopping center. I really need access to that security system. Maybe it's connected to WiFi. I know it's a bit black hat but I need to do that anyway. I know police has those data from cameras (footages) but I want to find out what happened and why he did that. Maybe somebody told him to. Maybe he was under pressure. And I will try to access his PC, too. Please, help. I really need to know that.