THE jury in the trial of Hillsborough match commander David Duckenfield has started a fourth day of deliberations.

On Thursday morning, Judge Sir Peter Openshaw advised jurors there should be a "full and frank exchange of views" to reach a true verdict according to evidence.

Duckenfield, 74, denies the gross negligence manslaughter of 95 Liverpool fans at the 1989 FA Cup semi-final.

Former Sheffield Wednesday club secretary Graham Mackrell, 69, denies failing to discharge his duty under the Health and Safety at Work Act.

The jury at Preston Crown Court was sent out to continue deliberations at 11.33am.

The judge said: "Each of you is entitled to raise issues that you consider to be relevant, no one is entitled to impose their opinion on others."

He added: "Although what happens in the course of deliberations is entirely private and you mustn't tell anyone what passes in the course of deliberations, you do have collective responsibility to each other and to the process of justice.

"So, if something arises, whether outside the jury room or indeed inside the jury room, which gives you some concerns, if for example you thought one or more was not following this direction or any part of it or if there is any doubt, write a note to me or speak to the usher so I can take swift action to protect the integrity of the trial."