CPS Principal, Staff Stymied Police Investigation of Mass Shooting at Pilsen High School, Emails, Interviews Show

In the first crucial hours, police could not get access to video surveillance, a witness and other key information in a shooting that left two students dead, two wounded. CPS says it cooperated.

An Illinois Answers Project investigation found a CPS principal and staffers at Juarez High School threw up roadblocks to a Chciago police investigation of a mass shooting there in 2022. (Credit: File photo/Colin Boyle for Block Club Chicago()
An Illinois Answers Project investigation found a CPS principal and staffers at Juarez High School threw up roadblocks to a Chicago police investigation of a mass shooting there in 2022. (Credit: Colin Boyle/Block Club Chicago)
Benito Juarez High School Principal Juan Carlos Ocon (Credit: YouTube screenshot)
An email from the lead detective on the Juarez shooting, John Korolis, to the Juarez High School Principal Juan Carlos Ocon. (Source: Public document obtained through FOIA by the Illinois Answers Project. Redaction done by CPD.)

Afternoon of the shooting

Screenshot from a social media post from a witness to the Juarez shooting, showing the gunman, far left, standing over two victims. (Credit: Provided photo)
Nathan Billegas, 14, left, and Brandon Perez, 15, were shot and killed just after dismissal on Dec. 16, 2022, outside Juarez High School in the Pilsen neighborhood. (Credit: GoFundMe photos)
Police investigate the crime scene outside Juarez High School on Dec. 16, 2022, where four students were shot, two fatally. (Credit: Colin Boyle/Block Club Chicago)
Jadine Chou, center, CPS’ chief of safety and security, speaks at a news conference after the Juarez shooting in 2022. She is joined by then-Chicago Police Supt. David Brown, left, and CPS CEO Pedro Martinez. (Credit: Colin Boyle/Block Club Chicago)
Video surveillance footage released by Chicago police shows the alleged gunman fleeing Juarez High School after the shooting. (Credit: CPD social media post)

Amid chaos, CPS braces for new school week

A Dec. 17, 2022 email from the- Chief of Detectives Brendan Deenihan to officers involved in the Juarez shooting investigation. (Source: Public document obtained through FOIA by the Illinois Answers Project)
Email from then-Chief of Detectives Brendan Deeniham to officers involved in the Juarez shooting investigation. (Source: Public document obtained through FOIA by the Illinois Answers Project)
Candles light up a memorial site outside Juarez High School on Dec. 16, 2023, one year after the shooting. (Credit: Victor Hilitski/For Illinois Answers Project)
A handwritten message, “Always and forever on our minds,” on a candle jar at the memorial site outside Juarez High School in Pilsen on Dec. 16, 2023, one year after a mass shooting there. (Credit: Victor Hilitski/For Illinois Answers Project)

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