It happened the night of April 21, 2016, in the 1600 block of North Luna.
Data from the phone might point to others who helped Mack and her boyfriend, Tommy Schaefer, plot the murder of Mack’s mother, Sheila Von Wiese-Mack.
Kamari Belmont, freed on a technicality and out from under a murder charge, made it barely a mile from the jail before he was shot and killed Monday.
For the first time in more than four years, Chicago went eight days without a fatal shooting.
“This is a challenging time for my family,” the alderman said in a statement. “But, with the help of God, we will get through it,”
Kenneth Austin, 28, was taken into custody on Feb. 8 on the South Side based on a warrant from Louisville.
Two children — an 11-year-old girl and a 2-year-old boy — have died from gunfire in the last four days in Chicago; a third is in critical condition.