The FBI on Tuesday announced a federal charge against Decarlos Dejuan Brown Jr. in the Aug. 22 killing of Ukrainian refugee Iryna Zarutska aboard a Charlotte light-rail train, citing one count of committing an act that caused death on a mass transportation system.

FBI Director Kash Patel said the agency moved immediately to assist local authorities and thanked Attorney General Pam Bondi for pursuing federal prosecution. Bondi said the Department of Justice will seek the maximum penalty and described the attack as the result of "failed soft-on-crime policies that put criminals before innocent people."

Brown, 34, is already charged in Mecklenburg County with first-degree murder in the death of 23-year-old Zarutska. Surveillance footage from the LYNX Blue Line captured the moments before the attack; law enforcement described the assault as "seemingly unprovoked." Court documents allege Brown took out a folding knife and stabbed Zarutska, who was wearing her pizzeria uniform, three times.

James C. Barnacle Jr., the FBI special agent in charge in Charlotte, said the federal charge is intended to help bring Zarutska's family a measure of justice. "We hope this federal charge will help bring her family a measure of justice and the courts will hold the subject charged in this horrific act accountable," he said. "Everyone in this country deserves to go to work, to school, or just across town without fear of being attacked."

Zarutska fled Ukraine with her family in 2022 to escape the war and had been living and working in Charlotte, her obituary said. Her family and friends described her as an artist who had earned a degree in art and restoration and who was devoted to animals. Local officials and community members held vigils after the killing.

Brown's case has drawn scrutiny in part because of an extensive prior criminal history. Court and prison records show 14 arrests over more than a decade and convictions that include larceny and breaking and entering in 2013 and a 2015 conviction for robbery with a dangerous weapon, for which he served more than six years. He was released in 2020 and remained on parole until 2021. More recent charges this year included communicating threats and misuse of the 911 system, and local authorities said he was not under state supervision at the time of Zarutska's killing.

President Donald Trump commented on the case on social media, calling Brown a "lunatic" and using the incident to advocate for tougher sentencing policies and greater federal involvement in violent crime cases. Bondi, who announced the federal prosecution, said she had directed DOJ attorneys to pursue the charge and vowed to seek the harshest penalty available. "We will seek the maximum penalty for this unforgivable act of violence — he will never again see the light of day as a free man," she said.

Federal prosecutors filed the complaint after an FBI-led investigation that coordinated with local law enforcement. The federal charge carries potential penalties under statutes that address violence against passengers on mass transportation systems; prosecutors did not immediately provide a timetable for any federal arraignment.

The case has also prompted community reactions and policy debate. Advocates for victims' rights and for stricter criminal sentencing pointed to Brown's prior convictions and recent arrests as evidence that stronger supervision or detention might have prevented the attack. Others urged caution, noting that criminal-justice policy discussions should be guided by complete information about supervision, release decisions and available interventions.

A crowdfunding platform removed fundraisers that supporters had started for Brown after public outcry, the company said. Local officials in Charlotte have called for a review of public-safety measures on the transit system and said they would work with community groups to support victims and passengers.

Brown remains held on state murder charges while the federal prosecution moves forward. Authorities have encouraged anyone with additional information about the attack to contact law enforcement as both local and federal investigations proceed.