sentences:  As she had suffered a minor head injury during the struggle samples of brain tissue were subsequently examined by an independent neuropathologist to establish whether brain injury may have caused the hypoxia rather than asphyxiation as a direct result of the gag and tape.Two further tests were then conducted by independent neuropathologists who both dismissed the head injury as a factor.On 15 May 1995, three police officers from the ADG stood trial accused of Gardner's manslaughter.