The 18-year-old was rushed to hospital with life-threatening injuries following the incident in Sunderland city centre this morning.
The lad sadly died from his injuries as police launched a murder probe.
A man has been arrested in connection with the incident which took place at 1.30am this morning.
A Northumbria Police spokesman said: “The investigation is ongoing and police are appealing for anyone with information about the incident to get in touch.
“An increased police presence may be seen in the area as officers carry out enquiries and offer reassurance in the community.”
Senior Investigating Officer, Detective Chief Inspector John Bent, added: “One person remains in custody but we do need anyone who witnessed the incident or who may have information to get in touch with Northumbria Police.
“We would encourage anyone who say anything, was in the area at the time of the incident or thinks they saw anything suspicious, to get in touch via 101 quoting log 124 24/02/19 or Crimestoppers anonymously on 0800 555 111.”
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