A Springville woman whose newborn child drowned in a toilet won't be prosecuted because she didn't know she was pregnant.

Tifany Johnson, 25, gave birth in the bathroom of a Mapleton home on April 29, 1997. Paramedics found Johnson hemorrhaging on the bathroom floor and discovered a full-term infant inside the toilet.Four months later, Johnson was charged with manslaughter, a second-degree felony. But prosecutors on Monday allowed Johnson to enter into a diversion agreement by which the charge will be dropped after 18 months as long as she doesn't violate the law.

Johnson also agreed to participate in therapy sessions and a life-skills course. Deputy Utah County attorney Craig Madsen told 4th District Judge Lynn W. Davis that Johnson's diminished mental capacity means she's not responsible for the child's death.

"I have become convinced that the defendant did not know or understand what was happening to her," Madsen said.