Brother of suspected Ukrainian refugee killer explains how authorities could have prevented horrific attack

The brother of Decarlos Brown Jr. has suggested that the fatal attack on a Ukrainian refugee could have been prevented.

Brown has been accused of brutally murdering 23-year-old Iryna Zarutska on a train in North Carolina on August 22.

Chilling video footage shows a man, believed to be Brown, already sat on the train in question when Zarutska got on.

She sat in front of Brown, who initially appeared to pay no notice to the young woman. As time went on, the man pulled something out of his pocket, which was later revealed to be a knife. He proceeded to use the knife to stab Zarutska multiple times, ultimately killing the Ukrainian refugee.

Brown has since been charged with first-degree murder over the unprovoked attack and is now facing federal charges as well.

United States Attorney General Pam Bondi said that they're seeking the death penalty for Brown to ensure he will 'never again see the light of day as a free man' if found guilty, says BBC News.

Yesterday (September 9), federal prosecutors charged Brown with one count of committing an act causing death on a mass transportation system.

In light if Brown being named as the key suspect in the case, his half brother Jeremiah, who shares a father with Brown, has spoken out.

Brown reportedly has schizophrenia, a prison record and numerous arrests for violence, but Jeremiah was unaware of his mental health issues, he told the New York Post.

"He could do it again," Jeremiah went on to say of his brother's alleged crimes. "They should still treat him for his mental issues but there are consequences for his actions."

He added that Brown should 'suffer the consequences'.

Iryna Zarutska has been named as the young woman who died in the attack (Iryna Zarutska/Instagram)

Elsewhere, Jeremiah argued that Zarutska's ultimately death could have been prevented.

Prior to the Ukrainian's death, Brown was arrested in January for 'misuse of the 911 system', The Telegraph reports.

He'd called 911 and when officers arrived to do a welfare check on Brown he allegedly told them that there were 'man-made' materials inside him that were controlling his body.

Brown was left 'upset' by the way police responded and called 911 when they were still there, which resulted in him being charged.

But Brown wasn't detained. Instead he was released that same day on a so-called 'written promise' to attend his next court date.

The White House has since argued that his release left Brown 'free to slaughter an innocent woman just months later' — and his brother agrees.

"I think they could have pretty much prevented it then," Jeremiah said of his sibling being released earlier this year.

If you or someone you know is struggling or in crisis, help is available through Mental Health America. Call or text 988 to reach a 24-hour crisis center or you can webchat at 988lifeline.org. You can also reach the Crisis Text Line by texting MHA to 741741.