Charles Leto is charged with killing 15-year-old Marjay Dotson and attempting to kill Jeremy Herred Jr.
Police say Leto shot both teens at Douglass Park in June.
Leto's lawyers claim it was self-defense, as he believed the teens were going to attempt to rob him.
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A lawyer for Herred, who was in court for Tuesday's hearing, claims that's not true.
Herred is paralyzed from the shooting, and his lawyer says he is expecting to be released from a rehabilitation center soon.
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