Williams was taken into custody in Matteson by the South Suburban Major Crimes Task Force on Wednesday.
Williams is set to appear at the Bridgeview courthouse for an afternoon bond hearing Friday.
Williams and Britten knew each other, Britten’s family said. Another family member with Britten at the mall said he and Williams had words then Williams shoved Britten.
The gunfire caused panic inside the mall and shoppers took shelter.
“Screaming and running,” one mall employee said. “It all happened so fast. Everybody was just going crazy.”
In 2017, Williams was convicted of armed robbery. He was on parole.
The police investigation is ongoing.