The family of an 18-year-old student who died after being handcuffed, after being fatally stabbed by a Sikh man, have hit out at the "shocking" treatment of their son by police and called for urgent action to address a "national emergency" of knife crime.Vickrum Digwa, 23, was jailed for life to serve a minimum of 21 years for stabbing Henry Nowak with a ceremonial knife with a 21cm blade, which he carried as part of his religion.

The family of an 18-year-old student who died after being handcuffed, after being fatally stabbed by a Sikh man, have hit out at the "shocking" treatment of their son by police and called for urgent action to address a "national emergency" of knife crime.Vickrum Digwa, 23, was jailed for life to serve a minimum of 21 years for stabbing Henry Nowak with a ceremonial knife with a 21cm blade, which he carried as part of his religion.