Chicago police officers shot and killed a 17-year-old, after a foot chase near 41st and Pulaski.
It happened shortly before 10 p.m.
Police say when they confronted the teen who had been breaking into cars, he pulled a knife and slashed one of the tires on their squad car and tried to break a passenger window.
Officers shot the teen after he waved the knife at them.
The teenager’s name hasn’t been released yet.