A mother of a 19-year-old student, killed alongside two others during a knife rampage in Nottingham last June, has accused the Nottinghamshire police of having “blood on [its] hands”.

Emma Webber, the mother of Barnaby Webber, accused the force of failure for not arresting triple-killer Valdo Calocane months earlier, as the 32-year-old was sentenced to indefinite detention in a high-security hospital at Nottingham crown court today. “We as a devastated family have been let down by multiple agency failings and ineffectiveness.”