Day is the Illinois State University student who was found dead in a river more than 60 miles away from campus.
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The video in this report is from a previous report
The new law requires a coroner or medical examiner to notify the FBI when human remains are not identified within 72 hours of discovery.
READ MORE | Jelani Day's mother shows why she believes foul play was involved in son's death
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The LaSalle County coroner ruled Day's death a drowning, but his family believes someone killed him.
Day's mom reacted to the law on Facebook saying "Even in BAD times...God is still GOOD! THE JELANI DAY BILL IS NOW A LAW! BUT I yet have so much work to do!"