robert bates , left , is seen walking to court on tuesday morning with attorney corbin brewster , right , before he entered his not-guilty plea in the death of eric harris , who was killed during a botched sting on april 2 .
since the incident there have been allegations bates was not properly trained and it is now emerged that when previously confronted by other deputies over his behavior , he told them he could do whatever he wanted .
he was said to have used his personal car while on duty and made unauthorized vehicle stops .