The man was arrested for possession of a firearm by a felon last week. On Wednesday, his bail was set at $1 million. He would have had to have posted 10 percent — or $100,000 — to be released.
The man's lawyer could not be reached and police did not have information on the man being released.
Tyshawn, a 9-year-old boy, was targeted, lured into an alley and executed on Nov. 2, police have said.
DNAinfo Chicago has not named the person of interest because he has not been charged in the Tyshawn Lee case.
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