A 17-year-old boy has been arrested on suspicion of attempted murder after a teenager was stabbed on board a bus in north London.
The 19-year-old victim is fighting for his life in hospital after being knifed in the chest on the route 134 bus at Colney Hatch Lane, Muswell Hill, on Saturday afternoon.
Police were called at about 4.40pm, and the man was taken to an east London hospital by air ambulance.
His condition remains critical.
Detective Sergeant Jon Deans who is investigating the incident said: “There is a young man in hospital in a very serious condition and we are working hard to establish how he came to be attacked.”
The incident comes amid a wave of stabbings across the country which have prompted warnings of a "national emergency".
At PMQs on Wednesday, Theresa May announced she would host a summit on knife crime and said the Government would be putting more resources into policing.
Anyone with information on this incident is asked to call Barnet CID on 101 quoting reference 5259/9MAR, or contact Crimestoppers anonymously on 0800 555 111.
