Topline: Investigators say first responders discovered the 14-year-old deceased inside a residence, leading to the arrest of a Wisconsin woman on a homicide charge.
Published: March 25, 2026 8:00 am ET
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via Town of Turtle Police Department
TOWN OF TURTLE, WI — A 14-year-old was found dead inside a home in Rock County on Friday morning, and a 41-year-old Beloit woman has been arrested in connection with the case, authorities said.
According to the Town of Turtle Police Department, officers and firefighters responded to a welfare check in the 2000 block of E. Gorton St. on the morning of March 20. The response included assistance from the Rock County Sheriff’s Office, Beloit Police Department, Town of Beloit Police Department, and Beloit Fire Department.
First responders arrived at the residence and discovered the 14-year-old deceased inside, according to the department.
WIFR reports that authorities were dispatched to the home just before 8 a.m. for the welfare check. Deputies later identified a suspect, and 41-year-old Tyiece L. Oninski, of Beloit, was taken into custody.
Oninski has been arrested for first-degree intentional homicide, according to the Rock County Sheriff’s Office and multiple reports.
According to the Janesville News Report, investigators confirmed that a suspect was identified following the discovery, leading to Oninski’s arrest on the homicide charge.
Officials have not said how Oninski is connected to the teen, and that information remains unclear.
The investigation is ongoing and is being handled by the Rock County Sheriff’s Office in conjunction with the Rock County Medical Examiner’s Office. Authorities say more information will be released at a later date.
Presumption of Innocence: A presumption of innocence means that any defendant in a criminal trial is presumed to be innocent until they have been proven guilty beyond a reasonable doubt in a court of law. The defendant in this case is only accused of the charges set forth in the criminal complaint. They are innocent until proven guilty.
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Police: Woman Arrested in Death of 14-Year-Old After Welfare Check
Investigators say first responders discovered the 14-year-old deceased inside a residence, leading to the arrest of a Wisconsin woman on a homicide charge.
By Jacob Charles
Published: March 25, 2026 8:00 am ET
via Town of Turtle Police Department
TOWN OF TURTLE, WI — A 14-year-old was found dead inside a home in Rock County on Friday morning, and a 41-year-old Beloit woman has been arrested in connection with the case, authorities said.
According to the Town of Turtle Police Department, officers and firefighters responded to a welfare check in the 2000 block of E. Gorton St. on the morning of March 20. The response included assistance from the Rock County Sheriff’s Office, Beloit Police Department, Town of Beloit Police Department, and Beloit Fire Department.
First responders arrived at the residence and discovered the 14-year-old deceased inside, according to the department.
WIFR reports that authorities were dispatched to the home just before 8 a.m. for the welfare check. Deputies later identified a suspect, and 41-year-old Tyiece L. Oninski, of Beloit, was taken into custody.
Oninski has been arrested for first-degree intentional homicide, according to the Rock County Sheriff’s Office and multiple reports.
According to the Janesville News Report, investigators confirmed that a suspect was identified following the discovery, leading to Oninski’s arrest on the homicide charge.
Officials have not said how Oninski is connected to the teen, and that information remains unclear.
The investigation is ongoing and is being handled by the Rock County Sheriff’s Office in conjunction with the Rock County Medical Examiner’s Office. Authorities say more information will be released at a later date.
Presumption of Innocence: A presumption of innocence means that any defendant in a criminal trial is presumed to be innocent until they have been proven guilty beyond a reasonable doubt in a court of law. The defendant in this case is only accused of the charges set forth in the criminal complaint. They are innocent until proven guilty.
Editor's Note: ThePo makes every effort to accurately transcribe the contents of affidavits of probable cause contained in criminal complaints. Often, the complaints themselves are copies of copies of faxed copies, and are difficult to read. To confirm the accuracy of our transcription, contact the Magisterial District Court listed above and request a copy of the criminal complaint. It's a public record to which you are entitled.
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Editor Picks
Latest Articles
Police: Woman Arrested in Death of 14-Year-Old After Welfare Check
Investigators say first responders discovered the 14-year-old deceased inside a residence, leading to the arrest of a Wisconsin woman on a homicide charge.
By Jacob Charles
Published: March 25, 2026 8:00 am ET
via Town of Turtle Police Department
TOWN OF TURTLE, WI — A 14-year-old was found dead inside a home in Rock County on Friday morning, and a 41-year-old Beloit woman has been arrested in connection with the case, authorities said.
According to the Town of Turtle Police Department, officers and firefighters responded to a welfare check in the 2000 block of E. Gorton St. on the morning of March 20. The response included assistance from the Rock County Sheriff’s Office, Beloit Police Department, Town of Beloit Police Department, and Beloit Fire Department.
First responders arrived at the residence and discovered the 14-year-old deceased inside, according to the department.
WIFR reports that authorities were dispatched to the home just before 8 a.m. for the welfare check. Deputies later identified a suspect, and 41-year-old Tyiece L. Oninski, of Beloit, was taken into custody.
Oninski has been arrested for first-degree intentional homicide, according to the Rock County Sheriff’s Office and multiple reports.
According to the Janesville News Report, investigators confirmed that a suspect was identified following the discovery, leading to Oninski’s arrest on the homicide charge.
Officials have not said how Oninski is connected to the teen, and that information remains unclear.
The investigation is ongoing and is being handled by the Rock County Sheriff’s Office in conjunction with the Rock County Medical Examiner’s Office. Authorities say more information will be released at a later date.
Presumption of Innocence: A presumption of innocence means that any defendant in a criminal trial is presumed to be innocent until they have been proven guilty beyond a reasonable doubt in a court of law. The defendant in this case is only accused of the charges set forth in the criminal complaint. They are innocent until proven guilty.
Editor's Note: ThePo makes every effort to accurately transcribe the contents of affidavits of probable cause contained in criminal complaints. Often, the complaints themselves are copies of copies of faxed copies, and are difficult to read. To confirm the accuracy of our transcription, contact the Magisterial District Court listed above and request a copy of the criminal complaint. It's a public record to which you are entitled.
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