Authorities say more charges could be filed soon as they continue to sort through why a woman left a 90-year-old woman's remains propped on her toilet.

Prosecutors say Tammy Lewis kept Magdeline Alvina Middlesworth's decaying body in the bathroom of the Necedah home Lewis shared with her two children for weeks. They believe Alan Bushey told her God would bring Middlesworth back to life.

Lewis and Bushey already face two felony counts each of causing mental harm to a child.

Juneau County District Attorney Scott Southworth has said Bushey may have been running a cult and defrauding Middlesworth to get money. He says more charges could come as early as this week.

Sheriff Brent Oleson says a state Justice Department agent will arrive this week to help local authorities.