Chicago PD Investigates Deadly Bombing Linked to 25-Year-Old Fire Tragedy

Suspect Thomas Marr sought revenge for his family's death in the 'Heart of the Chicago Fire' incident

Published on Mar. 5, 2026

Got story updates? Submit your updates here. ›

In the latest episode of Chicago PD, the Intelligence Unit investigates a deadly bombing linked to a 25-year-old fire tragedy known as the 'Heart of the Chicago Fire.' The suspect, Thomas Marr, was a young boy rescued from the fire by Sergeant Voight, but his entire family perished. Now Marr is seeking revenge, triggering a high-stakes pursuit by the police and the FBI.

Why it matters

This case highlights the long-lasting trauma and desire for justice that can stem from tragic events, even decades later. It also raises questions about the role of law enforcement in such situations and whether more could have been done to support Marr after the initial fire incident.

The details

Marr, who has no criminal record since a juvenile assault charge, has been working as a day trader and cyber consultant. He rigged his apartment to explode when police arrived, forcing them to clear the building. Chief Pascal then went in alone to search for evidence, putting himself at great risk. The case has driven a wedge between Voight and his superiors, as he grapples with his role in Marr's life after the fire.

  • The 'Heart of the Chicago Fire' incident occurred 25 years ago.
  • Marr was a young boy when Sergeant Voight rescued him from the fire.
  • The deadly bombing took place on March 4, 2026.

The players

Thomas Marr

A 25-year-old man seeking revenge for the death of his family in the 'Heart of the Chicago Fire' incident, which he blames on Sergeant Voight and the police.

Sergeant Hank Voight

A veteran Chicago PD officer who rescued Marr from the deadly fire 25 years ago, but was unable to save Marr's family.

Chief Pascal

The Chicago Fire Department chief who went into Marr's rigged apartment alone, putting himself at great risk to search for evidence.

Got photos? Submit your photos here. ›

What they’re saying

“Marr's whole family died in that fire. It was known as the Heart of the Chicago Fire. This year marks its twenty-fifth anniversary. Its why Marr was doing all of this. He wanted revenge because something about the fire wasn't kosher.”

— Sergeant Hank Voight

“Marr may be a monster. Its just that he's one of our own making. Voight carried Marr out of the building of that fire. He risked his life doing so when he could have left. When now he wishes he had left him.”

— Detective Jay Halstead

What’s next

The police and FBI will continue their investigation into the bombing and Marr's motives, while also examining Voight's role in the original fire incident that shaped Marr's life.

The takeaway

This case highlights the long-lasting impact of trauma and the complex ethical dilemmas faced by law enforcement when trying to help troubled individuals. It underscores the need for comprehensive support systems to prevent such tragic outcomes in the future.