Police say the adults had drugs in the car.
According to authorities, the pursuit started at approximately 11 p.m. Monday when officers received a tip and tried to pull over a car near 87th Street and Wood. The car, which was carrying the children, sped off, police said. Officers chased the vehicle for about a half-mile before it hit railroad tracks, went airborne and slammed into a pole.
City crews were at the scene of the crash Tuesday sweeping up and removing what was left of the damaged light pole.
According to police, a 22-year-old female was driving the car. An adult male was a passenger. Authorities say the woman is the mother of the children, two boys who were said the be in good condition early Tuesday.
"I saw two kids in the back," neighbor Pierre Curry told ABC7 Chicago. "One was in a car seat, and the other was crying. Man, they [police] came from everywhere. I saw the baby hollering in the backseat, crying."
The boys are 3 years old and 1 year old. Curry said he saw a knot on the older boy's head. Emergency crews had to use the jaws of life to rescue the mother, who was revived at the scene.
"Man, it was terrible. It was sad though. It shook the whole building, shook the whole building," said Curry.
One of the boy's was recovering at Christ Medical Center in Oak Lawn, and the other was at Comer Children's Hospital in Chicago Tuesday.
The two adults were in critical condition at Christ Medical Center.
Police had not filed any charges Tuesday, but they said drugs were thrown out of the vehicle during the chase. They also said a gun was recovered from the vehicle, which had been under surveillance.