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Rapper Sues California Prison System Over Stabbing Incident

April 15, 2026 · Maren Garwell

Rapper Tory Lanez has launched a $100 million legal action against California’s Department of Corrections after a severe stabbing incident whilst incarcerated at the California Correctional Institute in Tehachapi last May. The artist, known as Daystar Peterson and currently serving a 10-year prison term for the 2020 shooting incident involving Megan Thee Stallion, was stabbed 16 times by prison inmate Santino Casio in what the lawsuit characterises as an “unprovoked dangerous assault.” The assault left Peterson hospitalised with a collapsed lung and numerous stabbing injuries to his back, torso, and head. The lawsuit names the Department of Corrections, the facility warden, and guards as respondents, alleging carelessness regarding inmate placement and a delayed response to the violence.

The May 2025 Incident and Its Consequences

The May 2025 stabbing incident at Tehachapi proved a watershed moment in Peterson’s incarceration. According to the lawsuit, fellow inmate Santino Casio, who was completing a life sentence for second-degree murder, launched an unprovoked attack that left the rapper fighting for his life. Peterson sustained a collapsed lung alongside several stab injuries across his back, torso, and head—injuries serious enough to warrant immediate hospitalisation. The attack raised significant concerns about security procedures in prisons and inmate classification procedures, particularly given the volatile circumstances of housing two inmates with such starkly different profiles and threat levels.

Following his recuperation, Peterson was relocated to San Luis Obispo County’s California Men’s Colony, constituting another stage in his incarceration experience. The lawsuit additionally claims that during this move, Peterson never recovered his personal items from Tehachapi, including songbooks containing lyrics to unreleased compositions—a loss that intensifies the psychological and physical harm of the incident. Notably, despite the seriousness of the assault, Casio was not prosecuted in connection with the assault, a detail the lawsuit highlights as part of systemic failures within the prison service.

  • Casio attacked Peterson 16 times during the unprovoked incident
  • Peterson admitted to hospital with collapsed lung and numerous injuries
  • Relocated to California Men’s Colony upon recovery
  • Personal possessions, including songbooks, not recovered from Tehachapi

Claims of Negligence, and Institutional Failure

Housing Options and Security Concerns

At the core of Peterson’s lawsuit sits a core challenge of the Department of Corrections’ decision process regarding prisoner accommodation placements. The legal filing argues that housing Peterson with Santino Casio—a lifer incarcerated for murder in the second degree—constituted a catastrophic failure in risk assessment and inmate classification. The lawsuit argues that the department “knew or should have been known” to recognise the danger inherent in this pairing. Peterson’s high-profile celebrity profile, the suit contends, made him an obvious target inside the correctional environment, rendering the accommodation choice not simply negligent but recklessly indifferent to his safety and wellbeing.

The lawsuit emphasises that such placement choices require careful consideration of detainee profiles, security classifications, and underlying reasons for violence. By neglecting to isolate Peterson from Casio, facility management allegedly demonstrated a institutional indifference for core protective measures that ought to regulate California’s correctional facilities. This breach of care, the legal team maintains, directly precipitated the circumstances in which the stabbing happened, changing what could have stayed preventable violence into an wholly predictable consequence of organisational negligence and insufficient safety provisions.

Response and Guard Behaviour

Beyond the initial housing decision, the lawsuit challenges prison guards’ response during the actual assault. According to the filing, correctional officers delayed their intervention when Casio initiated the assault, permitting violence to continue unabated. The lawsuit specifically criticises the failure to employ flash grenades or other non-lethal tactical measures that might have stopped the attack before Peterson sustained his most severe injuries. This alleged delay in response to an ongoing stabbing attack suggests either insufficient training, understaffing, or a troubling neglect of inmate wellbeing—each possibility undermining institutional competence.

The guards’ conduct during the critical minutes of the attack calls into question emergency protocols and staff preparedness within California’s prison system. Conventional correctional practices generally require swift action to acts of violence, yet the lawsuit suggests this incident departed substantially from such protocols. The cumulative effect of sluggish reaction times and the absence of suitable tactical response meant that Peterson’s 16 stab wounds were inflicted with minimal active resistance from security personnel, changing what could have been a grave occurrence into a life-threatening emergency necessitating hospitalisation.

The Wider Context of Lanez’s Imprisonment

Tory Lanez’s current imprisonment originates from a high-profile shooting event in 2020 involving rap artist Megan Thee Stallion. The altercation, which took place in the summer of 2020, led to Peterson firing at Stallion in the foot. After a lengthy legal process, he was found guilty in December 2022 on multiple gun-related charges, such as assault with a firearm, and thereafter sentenced to a ten-year prison sentence. This conviction marked a significant moment in rap music, attracting extensive press coverage and igniting considerable debate across the music sector concerning responsibility and the circumstances surrounding the occurrence.

Peterson’s legal battles have persisted during his incarceration, with his defence counsel lodging an appeal contesting the conviction and sentence. However, in November 2025, a panel of three judges denied his appeal and upheld the original 10-year sentence, essentially shutting down what many anticipated as an route to freedom or sentence reduction. This rejection came roughly six months after the stabbing incident at Tehachapi, meaning Peterson was dealing with both the physical and psychological aftermath of the prison attack whilst simultaneously processing the disappointment of his failed appellate challenge. The confluence of these events has substantially complicated his situation in the California correctional system.

Key Event Date
Shooting incident involving Megan Thee Stallion Summer 2020
Conviction on firearms charges December 2022
Stabbing incident at California Correctional Institute Tehachapi May 2025
Appeal denied by three-judge panel November 2025

Lawful Claims and Compensation Sought

Tory Lanez’s legal claim against the California Department of Corrections seeks $100 million in financial restitution, representing one of the largest cases filed against the state’s correctional system in recent times. The lawsuit names the Department of Corrections as the primary defendant, alongside the warden and individual guards stationed at the California Correctional Institute in Tehachapi. The lawsuit argues that widespread deficiencies in facility operations and security procedures led to the severity of Peterson’s injuries during the stabbing incident in May 2025. The large compensation amount reflects both the bodily harm sustained and the mental distress of the unprovoked attack.

At the heart of the lawsuit’s arguments is the assertion that correctional officials made a dangerously inadequate decision in placing Peterson with cellmate Santino Casio, who was completing a life term for murder in the second degree. The legal filing asserts that the Department of Corrections either was aware or should have known that this cell assignment posed a serious danger to Peterson, especially given his prominent inmate standing within the facility. Furthermore, the lawsuit criticises the actions of correctional staff, contending that officers did not use proper emergency procedures such as flash grenades to halt Casio’s attack. Notably, Casio was not prosecuted with the assault despite inflicting 16 injuries on Peterson.

  • Department of Corrections did not stop known dangerous inmate pairing
  • Celebrity status rendered Peterson a recognisable target for attack
  • Security personnel delayed response to stabbing emergency
  • Prison failed to employ flash grenades or alternative security measures
  • Peterson’s personal possessions, such as unreleased songbooks, remain missing