St. Louis County Prosecutor Bob McCulloch gave an interview to local radio station KTRS following the news that witness 40 invented her testimony and likely perjured herself in front of the grand jury, and as we've come to expect from McCulloch, he was as unrepentant as ever about his decision to put her on the stand and on the way he conducted the grand jury hearing. Some witnesses lied to Michael Brown grand jury, McCulloch says.