The jury in a Sudbury murder trial is being told to focus on the accused's intent as testimony continues.

Both the Crown and the defence have agreed that Blake Lapierre stabbed Justin Dagenais, killing him.

The judge in this case said she wanted to make it clear for the jury about the issues upon which they have to decide.

While the identity of the killer, the weapon and cause of death are not in dispute, the jury has to decide what Lapierre's state of mind was at the time, Justice Patricia Hennessey said.

While the lawyers agree on some points about the homicide, they do not agree on the details of other charges, including assault with a weapon and aggravated assault. Those charges were laid in connection with an assault on party goer Brandon Dockery.

Before Dockery testified, a medical student who was working in the emergency room at the hospital that night testified about Dockery's injuries.

Helen Paciocco said she put 10 stitches in a cut under Dockery's eyebrow, and five stitches in a slash across his palm.

Both sides agree that Lapierre was showing the knife and some wooden knuckles at the party, and spoke about his intention to use them in case of a fight.

As for where Lapierre got the knife, it's agreed he purchased it at the Rainbow mall in downtown Sudbury.

In the statement of facts, it's noted that his mother and grandmother had concerns about Lapierre having the knife — so they took it away from him and hid it.

However, the day of the party, they checked the hiding place and found the knife was gone.