CHICAGO (CBS) — A southwest suburban tax preparer has been sentenced to 42 months in prison after pleading guilty to defrauding the state out of more than $400,000.

Gerrie Cokenour, 42, pleaded guilty to laundering money derived from a felony tax preparation scheme, according to a statement from the Illinois Attorney General’s office.

READ MORE: FDA Approves Pfizer-BioNTech COVID-19 Vaccine For Children Ages 12 To 15

Cokenour and 43-year-old Nycole Simms-Stevens, both of Joliet, were charged in February with theft of government property and entering false information on hundreds of Illinois income tax returns, according to state prosecutors. Simms-Stevens’ case is currently pending.

READ MORE: Navy Pier Flyover Completed After Years Of Construction Delays -- Many Ask Why It Too So Long

Cokenour owned Tax Advocators Inc., a Joliet tax preparation business that Simms-Stevens worked for, according to prosecutors. Between 2012 and 2015, they allegedly prepared 764 fraudulent state income tax returns. The returns contained inflated property tax data and other fraudulent deductions, which cost the state more than $400,000.

Cokenour was sentenced to 42 months in prison. The sentence will run concurrent to the 18-month sentence she is currently serving after pleading guilty to federal tax charges, prosecutors said.

MORE NEWS: Buckingham Fountain To Be Turned On Before Memorial Day After Sitting Dry For Over A Year Amid Pandemic

(Source: Sun-Times Media Wire © Chicago Sun-Times 2016. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)