New details have emerged about the allegations that led to the arrest of Kroy “KJ” Biermann Jr., the 15-year-old son of reality television personalities Kim Zolciak and Kroy Biermann.

According to a police report obtained by Us Weekly, the case stems from an alleged April 23 encounter at a Lifetime Fitness location in Alpharetta, Georgia.

A teenage girl, whose identity has not been made public, reported an alleged sexual assault after an encounter with KJ inside the facility.

KJ was arrested on Aug. 17 and charged with aggravated sodomy and aggravated sexual assault, according to court records cited by Us Weekly. A judge did not set bond, and a preliminary hearing was scheduled for Sept. 8.

Because both KJ and the accuser are minors, many details surrounding the case remain sensitive. The allegations have not been proven in court, and KJ has denied wrongdoing through a statement released by his mother.

What the newly obtained police report does provide is a clearer timeline of how investigators say the encounter unfolded — and what happened in the months before KJ’s arrest.

The Teen Had Gone to the Gym for Another Reason

According to the police report, the alleged victim originally went to the Alpharetta gym for a regularly scheduled chiropractic appointment.

When she learned the chiropractor was not available that day, she decided to work out instead.

Later, while sitting in the gym’s café area, she reportedly saw KJ enter the facility and called out to him.

The two already knew each other.

The girl told investigators that she and KJ had been friends in high school “for some time” and described him as someone who was often playful and flirtatious.

According to her account, the two began talking before KJ suggested they go toward another area of the facility.

The report states that the interaction later became physical in a way the girl says she did not consent to.

She told police that she repeatedly said no and eventually managed to get away.

Surveillance Footage Became Part of the Investigation

Investigators also reviewed surveillance footage from the gym.

According to the police report cited by Us Weekly, both teenagers were seen entering a family dressing-room area.

Roughly 20 minutes later, the girl was recorded leaving that area and heading toward the lobby.

KJ was then seen going toward the sauna alone.

The report does not describe surveillance footage from inside the room where the alleged assault is said to have occurred.

The girl reportedly told investigators that she had previously kissed KJ consensually on another occasion.

That detail is part of the police report, but the current allegations concern what she says happened during the April 23 encounter.

She Told Her Grandmother the Following Day

According to the report, the teenager went to school the day after the alleged incident but was reluctant to be there.

After seeing KJ’s girlfriend, she left school.

She then told her grandmother what she said had happened at the gym.

The girl was taken to a hospital as part of the investigation.

Testing later found no male or human DNA in the areas tested, according to the police report.

That result has since become a major part of Zolciak’s public defense of her son.

However, the criminal case remains active, and the absence of DNA does not by itself determine the ultimate legal outcome.

Investigators continued the case, and KJ was arrested nearly four months after the alleged encounter.

KJ Was Arrested in August

Court records obtained by Us Weekly show that KJ was arrested Monday, Aug. 17.

He faces charges of aggravated sodomy and aggravated sexual assault.

A judge did not set bond.

According to the Aug. 21 report, KJ was being held at the Metro Regional Youth Detention Center while awaiting a preliminary hearing scheduled for Sept. 8.

The charges are allegations, and KJ is entitled to the presumption of innocence unless proven guilty.

His family has strongly rejected the accuser’s account.

Kim Zolciak Says Her Son “Categorically Denies” the Allegations

Zolciak broke her silence after news of KJ’s arrest became public.

In a statement shared with Us Weekly, the former Real Housewives of Atlanta star described the allegations as “reckless and deeply troubling.”

She said KJ “categorically denies” participating in the conduct alleged by the teenage girl.

Zolciak also pointed to two pieces of information she believes support her son’s position.

First, she said KJ voluntarily underwent a polygraph examination and passed.

Second, she emphasized the reported DNA results.

According to Zolciak, no DNA belonging to KJ was found during the examination connected to the case.

She argued that accusations of this seriousness should be investigated through evidence and the legal process rather than decided publicly before the case reaches court.

Zolciak Also Warned Against Judging the Case Before Trial

The reality star’s statement attempted to draw a line between taking allegations seriously and assuming an accusation has already been proven.

“Every legitimate allegation deserves to be taken seriously and investigated based on the facts and evidence,” she said.

At the same time, Zolciak argued that no person should be publicly condemned solely because an allegation has been made.

She said the family remains confident that the evidence will eventually establish what happened.

For now, however, there are two sharply different accounts.

The teenage girl told police that an encounter with someone she considered a friend became nonconsensual.

KJ denies that accusation.

The courts will now be responsible for evaluating the evidence.

The Case Brings New Attention to an Already Public Family

KJ is the son of Zolciak and former NFL player Kroy Biermann.

Their family became widely known through Zolciak’s appearances on The Real Housewives of Atlanta and later the family reality series Don’t Be Tardy.

In recent years, Zolciak and Biermann have also drawn extensive attention because of their difficult separation, divorce proceedings and financial disputes.

KJ’s case is fundamentally different.

It involves their minor child, another minor and serious criminal allegations.

That makes accuracy and restraint particularly important as the legal process continues.

Many of the details now circulating publicly come from an accuser’s statements recorded in a police report. They describe allegations, not findings of guilt.

Likewise, Zolciak’s statements defending her son represent the family’s position, not a legal determination that the allegations are false.

The September Hearing Could Be the Next Major Step

The newly released police report helps explain why investigators pursued the case, but it does not resolve the central disagreement.

The accuser says she repeatedly rejected KJ’s advances and was assaulted.

KJ, through his mother, denies the allegations.

Investigators have surveillance footage showing the teenagers entering and leaving part of the gym, while testing cited in the report did not identify male DNA in the areas examined.

Those facts will now have to be considered alongside witness statements and any other evidence prosecutors or the defense present.

For the moment, KJ remains in juvenile detention without bond, according to Us Weekly.

His preliminary hearing is scheduled for Sept. 8.

Until a court determines otherwise, the charges against him remain allegations.

What has changed is that the newly obtained police report provides the clearest public account yet of the incident investigators say led from an April encounter between two teenagers at an Alpharetta gym to the arrest of Kim Zolciak and Kroy Biermann’s son nearly four months later.