Selisea Tyler | Photo courtes of Cook County Sheriff's office
Updated: July 5, 2014 6:33AM
A Chicago Heights woman who ambushed and killed a disabled co-worker in 2010 by stabbing her nearly 40 times was sentenced Tuesday to 25 years in prison.
Selisea Tyler, 31, pleaded guilty to one count of first-degree murder in Cook County Judge Frank Zelezinski’s courtroom before the sentencing.
Prosecutors said Tyler stabbed Cynthia Humphrey, 47, dozens of times over a work dispute in May 2010.
Both women worked as part-time janitors at SouthSTAR Services, a center for those with developmental disabilities. They reportedly were friends at one time but their relationship deteriorated.
On May 17, their supervisor suspended both of them when disruptions got out of hand. Tyler waited for Humphrey to return to her Matteson residence later that day, prosecutors said, and after Humphrey got off the bus that she rode home because of her disability, she was stabbed 39 times.
Tyler turned herself in and was charged with first-degree murder three days later.
Humphrey was raised in Chicago’s Beverly community and graduated from Simeon High School.