CCTV footage of Hāwera farmer Allen Ball's last hours alive has been shown in the High Court in New Plymouth on Wednesday.
Three officers are charged with the 55 year old's manslaughter, after he died in the cells of Hāwera Police station in 2019.
The court has heard from two of the officers who were working with the three defendants on the night Ball died.
Ball was arrested following a family harm incident and died in the cells in the early hours of June the 1, 2019.
It took six people to carry Mr Ball into the station. One of the officers, Constable Ben Patterson, on Wednesday gave evidence saying he didn't have any concerns at the time.
But he said he didn't know Ball had allegedly failed to respond to techniques conducted by two of the defendants designed to wake Mr Ball up - and protocol is, at that point, to call an ambulance.
The court has heard Ball had consumed at least a litre of bourbon and the defence says the officers thought he was simply sleeping it off.
But the Crown says he would have survived, if the officers had arranged the appropriate medical care.
The trial is set down for four weeks.
