WASHINGTON (AP) — On Tuesday, a man with an extensive criminal history was charged by the Justice Department for the murder of a Ukrainian refugee on a North Carolina commuter train. This charge could potentially lead to the death penalty.

Amid rising concerns, questions are surfacing about why Decarlos Brown Jr., despite 14 previous criminal cases, was free before allegedly wielding a knife and fatally stabbing 23-year-old Iryna Zarutska in a seemingly random attack that was recorded on video. This incident has sparked debate over whether cities like Charlotte are effectively tackling issues related to violent crime, mental health, and public transit security.

Relatives revealed through a GoFundMe post that Zarutska had moved to the United States seeking safety from the ongoing war in Ukraine. They described her as resolute in starting a safer life.

North Carolina prosecutors had already arrested Brown at the scene, charging him with first-degree murder. Now, he also faces a federal charge for causing death within a mass transportation system, which could result in a life sentence or the death penalty.

Attorney General Pam Bondi said the killing was “a direct result of failed soft-on-crime policies that put criminals before innocent people.”

“We will pursue the harshest penalty for this brutal act of violence — he will never experience freedom again,” Bondi declared in a statement.

In North Carolina, the death penalty remains a possible sentence for first-degree murder convictions. However, executions have been on hold since 2006 due to legal disputes regarding lethal injection protocols and the necessity of a doctor’s presence at executions.

Brown had cycled through the criminal justice system for more than a decade, with 14 prior cases in Mecklenburg County, including serving five years for robbery with a dangerous weapon, according to court records. He was arrested earlier this year after repeatedly calling 911 from a hospital, claiming people were trying to control him. A judge released him without bail.

His mother told local television she sought an involuntary psychiatric commitment this year after he became violent at home. Doctors diagnosed him with schizophrenia.

Video released Friday shows Zarutska entering the light-rail train and taking a seat in front of Brown, who was seated behind her. Minutes later, without any apparent interaction, he pulls out a pocketknife, stands and slashes her in the neck, investigators said. Passengers scream and scatter as she collapses.