(CBS) — Chicago Police Superintendent Garry McCarthy says a split second decision saved the life of an infant rushed to the hospital after his mother and grandmother were shot and killed.

Officers Michael Modzelewski and John Conneely say it was a chaotic scene when they arrived at a drive-by shooting in the 5300 block of Aberdeen.

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“When we arrived on scene responding to the call, we were met by the aunt who then relayed to us that the child had been shot,” said Modzelewski.

It was then they say they had to make a split second decision to break protocol and take the infant to the hospital.

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“When we were in route to the hospital, we called ahead to the firehouse on about 43rd and Ashland to see if there was an ambulance in quarters,” Conneely said. “They relayed to us that there was no ambulance in quarters, so that’s when we made the decision that we’re going.”

Conneely drove their police car to Stroger Hospital and Modzelewski, a parent himself, cradled the baby with his right hand and tried to stop the bleeding with his left.

Princeton’s mom, Patricia Chew, was shot and killed. So was the baby’s grandmother Lolita Wells. But Princeton survived, perhaps because of these cops.

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Superintendent McCarthy says the officers made the right decision and save the baby’s life.