Kataev. Report or comrade Lieutenant Colonel, in the Institute Laboratory on the third floor there was a massive explosion at 10 00 pm, an employee died in the explosion, she was conducting some kind of experiment there , there were no other victims, the entire floor was deenergized, in short, lieutenant, this is clear, its not clear just why the Homicide Department they called, comrade Lieutenant Colonel, its guilty, theres evidence, well, what evidence is there that youre crumpling like a young lady, its your fault , lets pass, thank you, good evening , hello, Lieutenant Colonel sylovets, pokrovsky, heres professor pokrovsky, rector of the institute, helped us examine the bombed laboratory, this is the first time this has happened in the history of our institute , the professor helped us find out the cause of the explosion, they have a ventilation shaft there with an exhaust hood, during operation the hood should be open, yes, and they never closed it at all, so it turned out to be c