This is the first picture of alleged stabbing victim Jack Woodley.
The 18-year-old died in hospital on Sunday night, 24 hours after an alleged attack in Houghton-le-Spring.
Detectives are today continuing to question nine teenagers, aged 14 to 17, who have been arrested on suspicion of wounding.
And today as the investigation continues Jack's family have paid tribute to him.
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In a statement they said: "Jack will be sorely missed by us all, we will always miss our cheeky and charming blue-eyed boy.â€
Emergency services were called to Newbottle Street at around 9.30pm on Saturday when it was reported that an altercation have begun near the Britannia Inn.
Jack was found seriously injured and taken to hospital.
But he passed away on Sunday night, surrounded by his family.
Jack, who grew-up in County Durham but had recently moved to Sunderland, leaves his parent, three brothers, his girlfriend and many friends.
Det Insp Joanne Brooks, of Northumbria Police, the senior investigating officer on the case, has today told of her determination to get justice for Jack.
â€œThis was a tragic incident that has sadly resulted in the death of an 18-year-old man who had his whole life ahead of him," she said.
â€œOur thoughts go out to Jackâ€™s loved ones at this incredibly difficult time and they will continue to be supported by specialist officers.
â€œWe know this incident has shocked the community and as our investigation continues, there will be extra patrols in the area and I would urge anyone with concerns to speak to an officer.
â€œWe are absolutely committed to finding out the circumstances that led to this most tragic event, and Iâ€™d like to thank witnesses, many of whom are young themselves, who have already been in touch.
â€œNothing will ever bring back Jack but the best way to honour is memory is to make sure those responsible for his death are brought to justice."
Det Insp Brooks is also appealing for anyone with information about Jack's death to get in touch.
She said: â€œOur enquiries will continue and I would ask anyone who witnessed the incident or has information, who has not yet come forward, to pick up the phone and contact police or Crimestoppers. Any information, no matter how insignificant you may feel it is, could prove crucial to this investigation.â€
Anyone with information is asked to call Northumbria Police on 101 quoting log NP-20211016-1193 or Crimestoppers anonymously on 0800 555 111.
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