An 18-year-old teenager was stabbed multiple times at a Halloween party in Newham, London, after a group of eight to ten masked men forced their way in.
The attack occurred at 7.45 pm on Wednesday, 28 October, inside a community centre on James Close.
Cops said the victim suffered wounds to his torso and arms and was taken to hospital with injuries described as potentially life-changing.
Police are treating the incident as attempted murder and have launched a manhunt for the assailants.
Detective Inspector Sam Lockstone, leading the inquiry, thanked anyone who has already come forward and urged partygoers who fled to contact police or share any video footage.
He added that information can also be given anonymously to Crimestoppers.
Anyone with details can call 101 quoting CAD 6525/28OCT26 or reach Crimestoppers on 0800 555 111.
