A Winnipeg man serving time at an Alberta prison for the deaths of his mother and sister is dead.

The Correctional Service of Canada issued a media release Thursday that Rodney Hirsekorn died at a Drumheller hospital Tuesday.

Hirsekorn was an inmate at Drumheller Institution.

The media released stated the 60 year old had been serving an indeterminate sentence since December 15, 2006 for second degree murder.

The cause of his death has not been released.

The Correctional Service of Canada will review the circumstances of the incident, as it does in all cases where an inmate dies, and it has notified police and the coroner’s office.

The Winnipeg Police Service arrested Rodney Dwayne Hirsekorn in March 2005.

A media release at that time said he walked into a police station and confessed he'd harmed two relatives.

Police found the bodies of 78-year-old Kathleen Hirsekorn and 44-year-old Colleen Hirsekorn in their home on Duluth Bay in Windsor Park.

They were later identified as his mother and sister.

Rodney Hirsekorn was charged with two counts of second degree murder.