Doctor warned Valdo Calocane could kill, three years before Nottingham stabbings

Family share medical records of Calocane's mental illness with BBC which they say show missed opportunities to prevent attacks

A doctor warned that Valdo Calocane's mental illness was so severe he could kill someone, three years before he stabbed three people to death in Nottingham, his medical records reveal.

Calocane's family, who were shown the records only after he was sentenced to indefinite detention in a high-security hospital for the attacks, have criticised the missed opportunities they believe could have prevented the killings.