I'm a slow typer....would have caught the post above with the police report. Could very well be someone(the victim) could have been on his way into the lab to set off a boomer. Looks like it went off early??
Hard to tell at this point. I know when I was in college I was a lab assistant and went in to work on a Saturday. Someone had left a gas line to the bunsen burner on (without the burner hooked up) and I went into a lab that was a "bomb" in the making. I had the sense to evacuate and call for help. They turned off the gas from the outside and eventually opened up the building.