The information could affect the alibi of Martell Flippins, 35, of Chicago, who had been set to stand trial Monday for the March murder of a 24-year-old man.
Jurors were asked to determine whether cellphone locations and data points from the defendant s GPS-equipped ankle bracelet proved his innocence or guilt.
During cross-examination, the woman said Tuesday was the first time she ever admitted to authorities she was in an intimate relationship with the defendant.