Canadian Forces Capt. Robert Semrau is accused of killing a severely wounded insurgent during an encounter in Afghanistan's Helmand province in October 2008. (Sean Kilpatrick/Canadian Press)

Deliberations continued Sunday in the military trial of a Canadian Forces captain charged with second-degree murder in the death of an unarmed insurgent in Afghanistan.

A military jury in Gatineau, Que., began its deliberations Saturday afternoon in the case of 36-year-old Capt. Robert Semrau and met again all day Sunday.

But a question from the four-member panel about evidence kept lawyers arguing for hours, preventing a verdict on the weekend.

Deliberations will resume Monday morning.

Semrau is accused of firing two rounds from his rifle into a dying Taliban fighter in Helmand province in October 2008.

The trial has heard that Semrau told fellow officers after the shooting that he simply wanted to put a wounded and dying enemy fighter out of his misery.

Semrau never testified during the four-month trial, and his lawyer presented no evidence.

He is charged with four different offences, including second-degree murder, which carries a mandatory life sentence with no chance of parole for 10 years.