SANTA ANA, Calif. - The Irvine parents who were accused of planting pills and marijuana in the car of a PTA president have pleaded not guilty to charges that they plotted against the woman.

The Los Angeles Times reports 38-year-old Kent Wycliff Easter and 39-year-old Jill Bjorkholm Easter entered their pleas Monday to conspiracy and false imprisonment charges.

According to court documents, the Easters are accused of targeting school volunteer and PTA president Kelli Peters because they believed she had locked their first-grade son outside during an afterschool program.

Authorities say the father left drugs and a pot pipe in Peters' unlocked car late one night and called police the next afternoon to report erratic driving near an elementary school, giving authorities a fake name.

The Easters, both lawyers, each face three charges.