Police failed to arrest Nottingham killer for alleged attack on two people weeks before stabbing rampage

Police failed to arrest Nottingham triple killer Valdo Calocane for allegedly attacking two people just weeks before he launched a horrifying knife rampage.

It has also emerged that Calocane, 32, could be eligible to appeal for release at least every three years under the terms of his sentence, to which it is understood that his victims’ families would be alerted.

Calocane stabbed students Grace O’Malley-Kumar and Barnaby Webber, both aged 19, and 65-year-old school caretaker Ian Coates to death on 13 June last year.

Less than six weeks earlier, on 5 May, the 32-year-old allegedly understands he was not arrested over the incident.