Earlier this week, Indiana AG Curtis Hill announced the discovery of 165 more bodies of unborn children in the trunk of a car in the Chicago suburb of Dolton.
Klopfer was an abortion doctor in Indiana for much of his career and is believed to have performed tens of thousands of abortions. He died at the age of 79 on September 3.
Last month, 2,246 preserved aborted fetuses were found in the garage at Klopfer's home as family members sorted through his estate.
RELATED: Over 2,000 preserved fetal remains found in home of deceased Indiana doctor
That initial discovery prompted an investigation that remains ongoing.
While searching through vehicles owned by the late doctor that he kept at a business property in Dolton, members of the Will County (Illinois) Sheriff's Officer discovered the additional remains in the trunk of a late 1990s Mercedes Benz Wednesday. Officials said the vehicles had been stored in an outdoor gated lot for more than six years.
Hill said the most recent remains are the result of abortions Klopfer performed from 2000 to 2002 at Indiana clinics located in Fort Wayne, Gary and South Bend.
Indiana's Medical Licensing Board suspended Klopfer's medical license in 2016 after finding numerous violations, including a failure to ensure that qualified staff were present when patients received or recovered from medications given before and during abortions.
"This is uncharted territory for all of us," AG Hill said. "We are following the same protocol for these additional 165 fetal remains that we have already established. We remain committed to ensuring that all these unborn children receive a respectful final disposition here in Indiana."
The Office of the Indiana Attorney General has set up a phone number and email address for the specific use of anyone with possible connections to the fetal remains who wish to inquire. The email address is email@example.com, and the phone number is (317) 234-6663.
The Associated Press contributed to this article.