The Illinois State University graduate student was last seen Aug. 24. His body was found more than a week later in the Illinois River in LaSalle County.
SEE MORE: Jelani Day case: Mystery grows around disappearance, death of ISU graduate student
Jelani Day case: Mystery grows around disappearance, death of Illinois State University graduate stu
The Illinois State grad student went missing in August.
Day's mother said his personal items were found in different areas and she wants to know how her son ended up in the river.
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She said Day's phone has not been found and is asking Apple to release phone records that may help investigators.