An inquest into how a Widnes man died in police custody, after officers used pepper spray on him, is due to hear evidence from one of the alleged perpetrators of violence.
Jacob Michael, 25, died on August 22, 2011, after collapsing at Runcorn Custody Suite.
The inquest, being held in Daresbury, will hear from more than 50 witnesses including police, medics and neighbours.
Cheshire Coroner Nicholas Rheinberg told the jury of eight women and two men they must determine if witnesses are telling the truth.
Mr Rheinberg added: "It will be necessary to look at the possibility of deficiencies in Jacob's care... It may be necessary to determine if any force used was reasonable and lawful."
Members of his family are also in court to hear the proceedings