Valdo Calocane, who later became known as the Nottingham triple killer, was reported to have assaulted a flatmate in a serious incident that took place in January 2022. During an inquiry into his actions prior to the fatal stabbings in June 2023, it was revealed that Calocane, who suffered from paranoid schizophrenia, held his flatmate, identified as Christopher, in a headlock and allegedly attempted to punch him. Mobile phone footage was presented as evidence in the inquiry, documenting this alarming behavior, which Christopher described as akin to being held hostage.

This incident marked a troubling pattern of violence leading up to the ultimately tragic events of June 2023, where Calocane fatally stabbed three University of Nottingham students. Just a few months before the headlock incident, he was involved in another assault, where he headbutted, punched, and swung handcuffs at a police officer. Both cases raised questions about police response and the lack of action taken against Calocane, even after multiple reports of his aggressive behavior.

The inquiry has now highlighted serious concerns regarding the police handling of Calocane's previous assaults and the potential indicators of his violent tendencies that were overlooked. The failure to act on the reports creates a conversation about mental health support and the legal responsibility of authorities to protect the public from individuals displaying clear signs of dangerous behavior, ultimately culminating in one of the most tragic events in Nottingham's recent history.