4 hours ago Toby Wadey and Nikki Mitchell, South of England home affairs correspondent Police handout Henry Nowak, 18, died in the attack in Southampton on 3 December The police watchdog is investigating after a young murder victim was arrested and handcuffed as he lay dying. First-year university student Henry Nowak, 18, had been stabbed multiple times with a 21cm (8in) ceremonial knife when officers in Southampton arrived at the scene in December. Hampshire and Isle of Wight Constabulary apologised after 23-year-old killer Vickrum Digwa was found guilty of murder on Thursday . The trial heard that Digwa lied to police, falsely claiming he was the victim and alleging he had been subjected to racist abuse. In a statement issued to the BBC, the Independent Office for Police Conduct (IOPC) confirmed an investigation into the police force's actions was ongoing.…