Biles-Thomas, 24, was charged with the triple murder which occurred on New Year's Eve, in Cleveland, Ohio.
At the time of his arrest, the Cleveland Division of Police and the Cuyahoga County Prosecutor’s Office released a statement saying they took Tevin into custody over the weekend in Georgia, charging him with six counts murder, three counts of voluntary manslaughter, five counts of felonious assault, and one count of perjury.
The incident occurred in an Airbnb party in Cleveland when an "uninvited group" crashed at approximately 11:30 pm.
An altercation between the gate-crashers and guests broke up shortly after their arrival.
Reports claim that guns were drawn, and the shooting then took place.
Three men—Devaughn Gibson, 23, Toshaun Banks, 21 and Delvante Johnson, 19— were all killed. Two others were injured.
“The relentless persistence of Cleveland Police Homicide detectives helped secure an indictment in this case,” Prosecutor O’Malley of Cuyahoga County said in the release. “It is through their hard work that we can begin to seek justice for these victims.”
Tevin was part of the United States Army prior to the incident, now he is now being held at the Liberty County Jail in Hinesville, Georgia.
His arraignment will occur in two weeks, on approximately September 13.
Biles-Thomas sister Simone won the hearts of America and the world when she won gold in the 2016 Olympics in Rio.
The gymnast has previously spoken about her family and the struggles she endured growing up in a broken home.
“My birth mother suffered from drug addiction, and when I was just 3 years old, my siblings and I were removed from her custody,” she wrote for CNN last year. “From there, we bounced around until I was 6 and my grandparents made the brave move to adopt us.”
She continued: “Although I was young when my foster care ordeal began, I remember how it felt to be passed off and overlooked,” she wrote. “Like nobody knew me or wanted to know me. Like my talents didn't count, and my voice didn't matter.
“Finding a family made me feel like I mattered,” she wrote. “Finding a passion, something I loved and was really good at, made me feel like I mattered. Representing my country and being part of such an amazing Olympic team matters, as does being a role model for those looking to fulfill their own dreams.”
The last time Simone made any public mention of her brother was in 2017, when she posted a photo of them together on social media.
She wrote, “my brother tevin / everyone says we look like twins but we don't see it.”
Our thoughts are with Simone and the victims' families.