A newly released video of the Aug. 22 attack on a Charlotte light rail train shows several passengers filming a Ukrainian refugee as she bled to death while only one bystander tried to stem the bleeding, authorities and news organizations reported.

The victim, identified by her family and authorities as 23-year-old Iryna Zarutska, was stabbed three times — to her neck and hands — after boarding a South End line train. She was pronounced dead at the scene. Decarlos Brown Jr., identified by prosecutors as the suspect, was arrested shortly afterward and initially charged with first-degree murder by local authorities.

Video reviewed by news outlets shows a man removing his shirt and attempting to help Zarutska, but nearly one minute and 40 seconds had passed before that aid was attempted, officials said. Other passengers are seen pulling out phones and recording the scene as blood pooled on the carriage floor and trailed through the train. Some people in the footage appear to glance over and then look away.

Federal prosecutors announced on Tuesday that Brown, whom authorities described as a career criminal, has been charged in federal court with crimes related to violence against a mass transportation system. U.S. Attorney Russell Ferguson said the federal case raises the possibility of a death-penalty prosecution. The Justice Department has in recent days elevated the case, citing the attack on public transit as an "attack on the American way," Ferguson said.

The federal charges follow the local murder complaint and will be pursued by federal authorities, who said the indictment is based on violence directed at a mass transportation system. Law enforcement officials said Brown remains in custody and that a magistrate denied bond in the local case.

Zarutska's family, through a fundraising page and statements to media, said she arrived in the United States in 2022 seeking safety from the war in Ukraine and had recently moved in with a partner. The family declined to have her body returned to Ukraine, saying she would have wanted to be buried in the U.S. because she "loved America," the family said.

The killing has drawn national attention and prompted debate about criminal justice policy and public safety. Florida Attorney General Pam Bondi, who is advising the federal prosecution, said the slaying was the result of "failed soft-on-crime policies" and urged federal action. President Donald Trump cited the killing in public remarks that criticized crime in cities governed by Democrats, calling Zarutska "slaughtered by a deranged monster who was roaming free after 14 prior arrests."

Authorities and local media reports said Brown has an extensive arrest history in Mecklenburg County dating back to 2007, including arrests and charges for robbery, felony larceny and other offenses. Records cited by news organizations indicated he served five years in prison for a 2014 armed robbery and was released in September 2020. Subsequent local police reports and records reviewed by media show arrests in 2021 and 2022 for offenses including assault, trespassing and disorderly conduct, and a January incident in which he was accused of misusing 911, according to those reports.

Mecklenburg County prosecutors declined to comment on specific aspects of the pending cases but said broadly that those who commit violent crimes should be held in custody pending trial. Brown faces the local first-degree murder charge as well as the newly announced federal counts.

Officials said the stabbing occurred about four minutes after Zarutska sat down on the train. Video shows the suspected attacker standing over the victim and witnesses describe her covering her face and slumping to the floor after the assault.

News organizations that reviewed the footage said they would not publish the full video because of its graphic content. Reporting also said a number of passengers who filmed the aftermath have been identified in the recordings, though it was not immediately clear whether any of them had been interviewed by investigators.

Charlotte police continue to investigate the incident. Federal prosecutors said they will determine whether to seek the maximum penalties available under federal law as the case proceeds through the courts. Defense counsel for Brown did not immediately respond to requests for comment through media channels.

The killing and the released footage have prompted public reaction across social media and in political discourse, as authorities weigh both local and federal paths for prosecution and families and community members mourn the loss of a young woman who had recently resettled in the United States.