Ohio State University football player Kosta Karageorge's body was found near campus on Sunday, reports ABC News. The walk-on defensive tackle has been missing since Wednesday when he left his apartment to go for a walk.

Police say Karageorge's body was found in a dumpster a couple hundred yards from his home. He died of what appeared to be a self-inflicted gunshot wound.

Columbus Sgt. Rich Weiner told reporters, "At this time, there's a lot of questions that we're still trying to work out. But he was found inside of the dumpster, the handgun was found inside of the dumpster with him."

Karageorge's mother said the 22-year-old suffered from concussions. About 1:30 a.m. on Wednesday, he cited the confussions in a text message to his mother that also read, "I am sorry if I am an embarrassment.”

ESPN reports OSU released the following statement:

The Ohio State University Department of Athletics was shocked and saddened to learn today of the death of student-athlete Kosta Karageorge, a senior from Columbus. Our thoughts and prayers are with the Karageorge family, and those who knew him, during this most difficult time.

*Information from the Associated Press was used in this report.