A Wisconsin woman accused of fatally stabbing her fiancé is continuing through the legal process as her defense team explores a potential plea deal.
Case Moves Forward in Court
Tonia Piontek, 46, is charged with first-degree intentional homicide, along with modifiers for domestic violence and use of a deadly weapon, in connection with the April 2025 death of her 41-year-old fiancé.
During a court appearance this week in Brown County, Piontek’s attorney said discussions around a plea agreement are ongoing but not finalized. The defense is awaiting a report from a domestic violence expert before making further decisions.
911 Call and Self-Defense Claim
According to a criminal complaint, Piontek called 911 the night of the incident and told dispatchers she had stabbed her fiancé.
“I just stabbed my boyfriend, I don’t think he’s okay. Someone needs to get here now,” she reportedly said.
Piontek told dispatchers the two had been arguing and that her fiancé “came at” her. She said she kept a knife nearby for protection and used it because she felt threatened.
Details From Investigation
Police said the couple had been drinking before the argument escalated. A neighbor reported hearing a fight, including loud noises and a door slamming, and told investigators that disturbances at the home had occurred in the past.
When officers arrived, they found the victim on the kitchen floor with a severe stab wound. An autopsy later determined the cause of death was a stab wound to the chest.
Piontek allegedly told police she used a pastry knife during the incident.
Defense Focus on Domestic Violence
Piontek’s attorney has argued throughout the case that she was a victim of domestic violence and acted in self-defense.
During earlier proceedings, the defense indicated plans to present testimony from a domestic violence expert to support that claim before any plea agreement is finalized.
Current Status
Piontek remains in custody at the Brown County Jail on a $1 million cash bond.
Her next court appearance is scheduled for Aug. 17 as the case continues to move forward.
