(CBSDFW.COM/CNN) — A Dallas woman has been sentenced to 54 months in federal prison for stealing millions of dollars in merchandise and selling it on the Internet over 19 years.

Kim Richardson, 63, agreed to pay $3.8 million in restitution following an investigation by the Federal Bureau of Investigation and Secret Service, US Attorney Ryan K. Patrick announced in a news release on Thursday.

READ MORE: Mother's Day Rush Highlights Staffing Shortages At North Texas Restaurants

The Dallas resident shoplifted during her travels across the U.S. and then sold the merchandise on eBay and via direct Internet sales before mailing the items by U.S. mail, Federal Express and United Parcel Service from August 2000 through April 2019.

“Richardson stole items from numerous retail stores. She used shoplifting tools to disable security devices and would exit the store by placing the stolen merchandise in a large black bag she carried,” the news release said. “Richardson assisted in the sale of the items on the Internet as well as packaging and mailing the stolen items.”

She has been ordered to serve her sentence followed by three years of supervised release.

READ MORE: Body Of Elderly Man Recovered From Joe Pool Lake

Buyers who purchased the stolen goods sent about $3.8 million into four PayPal accounts linked to Richardson.

During her sentencing, the court said it would be “virtually impossible” to identify everyone who was a victim of Richardson’s scheme, according to the release.

Richardson pleaded guilty in December 2019. She was allowed to remain on bond, the release said, and voluntarily surrender to a US Bureau of Prisons facility which will be determined “in the near future.”

MORE NEWS: Woman Killed By Ex-Boyfriend, Who Was Later Found Dead By Suicide, Dallas Police Say

(© Copyright 2020 CBS Broadcasting Inc. All Rights Reserved. CNN Wire contributed to this report. The-CNN-Wire™ & © 2020 Cable News Network, Inc., a Time Warner Company contributed to this report. All rights reserved.)