The youths face different allegations after authorities said all three were at a Hillsboro-area home when Gabbriana Boyster was fatally shot.
HILLSBORO, Mo. — Three juveniles face sharply different allegations in the death of 16-year-old Gabbriana Boyster, with one accused of involuntary manslaughter and weapons offenses and two others charged only with abandoning a corpse after authorities said the teenagers were present when Boyster was shot at her Missouri home.
The division of charges provides the clearest public indication so far of how juvenile authorities are treating the roles of the three youths. The Jefferson County Juvenile Office said one juvenile faces involuntary manslaughter, unlawful use of a weapon resulting in death, armed criminal action and abandonment of a corpse. The two other juveniles each face abandonment of a corpse. Authorities have not identified any of the three, disclosed their ages or publicly released the evidence supporting the individual allegations.
The case began with a call to deputies on the afternoon of July 11. Jefferson County sheriff’s deputies went to a home in the 7900 block of Tower Road north of Hillsboro and found Boyster with an apparent gunshot wound to the head. She was pronounced dead at the scene. Sheriff David Marshak said investigators believe the shooting occurred Friday evening, July 10, meaning the teenager’s body had remained inside the residence for hours before she was discovered Saturday.
Investigators later identified three juveniles they believed had been inside the home when the shooting happened. The sheriff’s office transferred them to the Jefferson County Juvenile Office, which handles cases involving young people accused of conduct that would constitute crimes if committed by adults. By July 14, Chief Juvenile Officer Melissa Perris had announced the allegations. The juvenile facing the manslaughter and weapons counts was still detained at that point. The other two were released after being charged with abandonment of a corpse.
The terminology surrounding a juvenile case is significant. The allegations should not be treated as findings of guilt, and authorities have released less identifying information than would ordinarily appear in a criminal case against named adults. Missouri law generally restricts access to juvenile court records, subject to statutory exceptions. That framework helps explain why the public account contains the charges but not the names, ages, detailed court filings or a conventional adult criminal docket describing each defendant’s alleged conduct.
What authorities have made public is narrower. The sheriff’s office believes all three juveniles were at the residence. One faces allegations tied directly to Boyster’s death and use of a weapon. All three face an allegation related to what happened after the shooting. Officials have not released a detailed narrative explaining why only one juvenile was charged with involuntary manslaughter or what specific actions led juvenile authorities to accuse each of abandonment.
That distinction also makes it important not to collapse the three cases into a single accusation. Two juveniles have not been publicly accused of manslaughter or a weapons offense in connection with the shooting. The third has not been publicly accused of intentional murder. The most serious announced death-related charge is involuntary manslaughter. Without additional court records or an official statement explaining the evidence, broader conclusions about intent, ownership of the firearm or the actions of individual juveniles would go beyond the facts authorities have released.
Authorities have specifically declined to fill one major gap: the ownership and origin of the gun. Public reports do not say who owned the firearm believed to have been involved, who brought it into the home or how it came to be accessible before Boyster was shot. Investigators also have not issued a public reconstruction of the moments leading to the gunfire. As a result, the charging decisions provide some information about the legal theory of the case without supplying a complete factual account of the shooting itself.
Boyster’s mother, Candy G’Sell, supplied part of the timeline in an interview with KSDK. She said she was away and last spoke with her daughter Friday night. Boyster told her she planned to stay home, according to her mother. G’Sell returned the next afternoon and found her daughter in a bedroom, then called 911. The sheriff’s office said neither Boyster’s mother nor the homeowner was present when the shooting occurred.
G’Sell also said the juveniles were friends of her daughter. Local television reporting described the three as boys, although their identities were withheld because of their ages. The friendship connection explains why they could have been together at the residence but does not establish what occurred among them. Authorities have not released a motive, and the involuntary manslaughter allegation itself does not support describing the case as an intentional killing.
The allegation of abandonment has made the period after the gunfire a separate focus of the case. Marshak said Boyster’s body was left for hours. Yet officials have not publicly stated whether anyone at the home attempted to help her, contacted emergency services, told another person what happened or remained in the residence after the shooting. They also have not described when each juvenile left. Those missing details are consequential because all three juvenile cases include allegations tied to the handling or abandonment of Boyster’s body rather than merely their presence at the scene.
Beyond the court process, Boyster’s death disrupted a school community preparing for another academic year. She was expected to be a junior in the Hillsboro R-3 School District. Superintendent Jon Isaacson said in a statement that the district’s thoughts were with her family and friends and that the school system wanted students, staff members and families to know support was available. The district offered grief counseling to people struggling with the death.
The response placed Boyster’s identity as a student alongside the legal language that soon dominated public coverage. An obituary published after her death identified her full name as Gabbriana Isabella Boyster and said she was born Jan. 28, 2010, in St. Louis. It listed her parents, siblings and extended relatives. She died at 16, weeks before classmates would have returned to school for a year she was expected to share with them.
The juvenile system’s confidentiality also means developments may not emerge publicly in the same way they would in a high-profile adult prosecution. Missouri law limits inspection and disclosure of many juvenile records, although exceptions can apply. In this case, officials were able to announce the allegations and custody status, but the public record found through Aug. 22 did not disclose a later adjudication, disposition or public hearing explaining the evidence in detail.
The last broadly reported status therefore remains the one announced in mid-July: one unidentified juvenile accused of involuntary manslaughter, unlawful use of a weapon resulting in death, armed criminal action and abandonment of a corpse, with two unidentified juveniles accused of abandonment. The more serious charges remained allegations, and no public report reviewed for this article established that the youths had been adjudicated responsible.
What is known about Boyster’s death is more definite than what is known about the young people accused afterward. She was found inside the Tower Road home on July 11. Investigators believe she had been shot the evening before. Her mother discovered her after returning home. Three juveniles believed to have been there were identified by detectives, and different charges followed. The firearm’s ownership, the precise sequence before the shot and the juveniles’ individual conduct afterward remain largely outside the public record.
Authorities had not publicly named the juveniles or announced a final outcome of their cases. The Jefferson County investigation and juvenile proceedings have therefore left the community with a defined set of allegations, but not yet a complete public explanation of how an evening among friends ended with a 16-year-old dead in her home.
Author note: Last updated August 22, 2026.