Vasquez-Lasso, 32, was responding around 4:45 p.m. as Montano was chasing a woman across the street from an elementary school on the city's South Side, authorities said.
CHICAGO POLICE OFFICER KILLED, SUSPECT IN CRITICAL CONDITION AFTER SHOOTOUT
Steven Montano, 18, is charged with killing Chicago police officer Andres Vasquez-Lasso, 32, who was fatally shot during a chase, police said. (Chicago Police Department)
The officer was shot several times and Montano was shot in the head during a gunfire exchange. Vasquez-Lasso was rushed to the Mount Sinai Medical Center, where he died. Montano remains hospitalized.
The shooting occurred as children were playing at a school, witnesses said. Maria Davila told FOX Chicago she was at home watching a movie on her phone when the shooting happened. She went to her window and saw a man down in a parking lot next to the playground holding his chest and shouting.
Vasquez-Lasso was also on the ground and not moving, she said.
"Shoot me, shoot me," Davila said the man on the ground yelled at a second officer who was standing between him and Vasquez-Lasso.
Authorities have not released many details about Montano, but FOX Chicago reported he has one prior arrest when he was taken into custody last year after running from a stolen car that was wanted in a shooting.
He was charged with a misdemeanor count of resisting or obstructing a peace officer, which was dropped months later. Prosecutors declined to file felony charges, according to an arrest report obtained by the news outlet.