An NHS trust responsible for the care of Valdo Calocane, who killed three people in Nottingham in June 2023, is under investigation for potential corporate manslaughter after it emerged he had been discharged from mental health treatment despite a documented history of violent behaviour. The probe raises serious questions about whether failures in his care and monitoring contributed directly to the fatal attacks, and it forms part of a wider reckoning over how NHS mental health services assess and manage patients who pose a known risk to the public.

Calocane, who had a history of violent episodes and had previously been sectioned, killed university students Barnaby Webber and Grace O'Malley-Kumar, along with school caretaker Ian Coates, before being detained and later sentenced to an indefinite hospital order. Scrutiny has focused on Nottinghamshire Healthcare NHS Foundation Trust's decisions around his discharge and follow-up care in the period leading up to the attacks, with investigators examining whether corporate failings meet the threshold for manslaughter charges against the organisation.