Boone-Doty – a member of the Black P. Stone Nation Bang Bang Gang, or BBGs – killed Tyshawn because he believed his father, Pierre Stokes, was a member of the Killa Ward faction.
His gang blamed Killa Ward for a shooting that killed Morgan’s brother, 25-year-old Tracy Morgan, and wounded their mother.
Boone-Doty was arrested and charged along with two other men – Corey Morgan, 31, and Kevin Edwards, 26 – who allegedly helped him kill young Tyshawn.
Edwards, who drove the getaway car, has been sentenced to 25 years in prison after pleading guilty to murder.
The recording that led to Boone-Doty’s conviction was recorded in Cook County Jail by Demetrius Murray, a high-ranking gang member who had been sentenced to 10 years for involvement in a separate shooting.
Boone-Doty was at the jail on an unrelated gun charge.
Murray testified in court this week that he agreed to wear a recorder in order to obtain incriminating evidence against Boone-Doty.
He said he offered to help authorities after he heard Boone-Doty’s disturbing account of how he allegedly killed the young boy, bolstered by his motivation to get a lighter sentence on his aggravated battery case.

Boone-Doty lured the little boy into an alley by promising him a juice box and then shot him at close range.
The nine-year-old was hit three times, including once in the head and once in the back.
The third bullet severed the top of the boy’s right thumb, suggesting he tried to block the bullets with his hands, his autopsy found.
In his recorded conversation, Boone-Doty is heard saying that he and his co-defendants were at Dawes Park on the afternoon of November 2, 2015.
Boone-Doty said that initially the three men who spotted Tyshawn alone in the park planned to kidnap and then torture him.
Morgan and Edwards then left, leaving Boone-Doty alone, he says in the recording.
Boone-Doty is recorded as saying he went over to Tyshawn and started dribbling his basketball as a ploy to lure him to come over to him.

‘I’m thinking in my head, ‘I gotta get this b**** off the side. F*** this.’
‘I take the ball.’
Boone-Doty said that he offered to buy Tyshawn whatever he wanted at a local store.
He then walked with Tyshawn toward a nearby alley. He says he looked around for the SUV that he rode in with Edwards and Morgan, but couldn’t see it.
He says that at this point he shoots him in the alley.
In a subsequent conversation with Murray that was also recorded, Boone-Doty describes the gun used to kill Tyshawn – a .40-caliber handgun.
He also graphically describes how a round penetrated the boy’s skull.
‘Dude, because I had the .40. I had like 15 shots and I hit shorty (Tyshawn) like 12 times,’ he said.
‘He so little. The (bullets) are coming out. I see that b*** go in his head. Boom!
‘That b**** came out, right here, like.’
Murray is heard on the tape asking Boone-Doty if he had any remorse about shooting a nine-year-old boy.
‘So tell me this, though. This is some real s—t. You don’t feel no type of way about killing that kid?’ Murray asked.
‘They killed my brother…that feelings (of guilt) is for s***,’ Boone-Doty said.
‘You got to be in this s*** all the way or not be in this s*** at all.’
Boone-Doty’s lawyer, Assistant Public Defender Danita Ivory, said that her client’s statements were simply a case of exaggerated bragging in order to impress a fellow inmate.
Closing arguments are scheduled for Thursday, with jury deliberations expected to begin either Friday or the start of next week.