A group of citiizens reported a gunshot heard last night. Then the police came to the scene and found a man with a gun on the left hand and a recording tape on the right. There was another man in the house claiming that he was a caretaker for the owner, and that the owner was the victim. And so the police played the recording tape. "Goodbye cruel world" In a scared,crying tone, then it stopped. The Police immediately arrested the caretaker. Why?​