The Nottingham Inquiry, led by retired Judge Deborah Taylor, is continuing to hear evidence about the events leading up to the attacks.
Calocane, who was 31 when he carried out the killings, had been known to the NHS and police, due to his history of mental health issues and previous incidents.
More than 100 witnesses, including police officers, NHS workers and former flatmates, are expected to give evidence to the inquiry in London over nine weeks.
The inquiry has heard police were called to two incidents at Brook Court in Radford in Nottingham, several hours apart, on 24 May 2020.
Calocane, the inquiry was told, had attempted to force entry into a flat in the early hours, believing his mother was being raped inside the property, and was subsequently arrested.
He was then released from custody to Brook Court – a short journey from the police station – at 19:18 and at 19:29, the police were called to the incident involving the woman who broke her spine.