(CNN) -- A missing Ohio State University football player complained about concussion symptoms before he disappeared, his parents told police. Kosta Karageorge, a reserve defensive lineman, was last seen about 2 a.m. Wednesday, according to a tweet sent from his personal account. In a copy of the missing persons report obtained by CNN, Susan Karageorge told police she received a text from her son about 1:30 a.m. that said, "I am sorry if I am an embarrassment but these concussions have my head all f***ed up." She added that her son has had several concussions and confusion "spells." Karageorge is a wrestler and football walk-on, according to CNN affiliate WCMH.
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NEW: Kosta Karageorge complained about concussions, according to a police report
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Karageorge hasn't been heard from since Wednesday, according to his family
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The 23-year-old missed practice on Wednesday
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Police say they're still treating this case as a missing persons report
"First and foremost, our primary concern is for the health, safety and welfare of @placeholder.