Douglas Hales Saskatoon

Douglas Hales outside the courthouse on Monday. (Albert Couillard/CBC)

Some of Daleen Bosse's medical records involving medication will be allowed as evidence at a Saskatoon murder trial.

Douglas Hales is charged with first degree murder in the death of the 25-year-old mother. Her body was burned and buried in a wooded area north of the city.

Hales' lawyer contends Bosse may have died of alcohol poisoning.

The court heard today from an undercover RCMP officer who befriended Hales.

On a series of road trips with the accused murderer, the officer said Hales expressed derogatory views more than once about aboriginal women. At one point, court heard Hales bought drugs and alcohol for an aboriginal prostitute, then took her into the bush so he wouldn't have to pay her for sex.

Hales is one of the last people seen with Bosse before she vanished from a Saskatoon bar 10 years ago.

CBC's Jennifer Quesnel is tweeting from the courthouse.