STEVENS POINT, Wis. -- The prosecution of a central Wisconsin man accused of killing his estranged girlfriend and two of their children in a gasoline-soaked home will continue Monday.

A pretrial conference is set in Portage County Circuit Court for Shane Kettner, 36. He has pleaded not guilty to three counts of first-degree intentional homicide.

Investigators found the bodies of Christine Gollon, 30, 3-year-old Ashley Kettner and 2-year-old Griffin Kettner on April 30 after breaking into the family's barricaded home in Nelsonville. Gollon's mother had called police worried about her welfare.

The coroner said the children were shot in the head and the mother suffered two cuts on her neck and wounds on her wrists.