Police : 4 found dead in car left suicide notes proclaiming innocence in child porn probe . Only 2 of the 4 were being investigated in child pornography probe , Tennessee authorities say . It appears man shot himself , ex - brother - in - law , friend before killing himself , police say . Child porn probe started after teen girl made allegations in September , police say .
Police : 4 found dead in car left suicide notes proclaiming innocence in child porn probe . Only 2 of the 4 were being investigated in child porn probe , Tennessee authorities say . It appears man shot sister , ex-brother-in-law , friend before shooting himself , police say . Child porn probe launched after teen girl made allegations in September , police say .