A teenaged boy is being treated in hospital after an argument broke out at the market on Bank Holiday Monday morning.
It is believed the 17-year-old was stabbed at round 9.15am outside Bourne Airfield Market near Camborne.
Police say he suffered serious but not life threatening injuries. He was airlifted to hospital.
At this time no arrests have been made.
Anyone with information about the incident should call police on 101 or report online at www.cambs.police.uk/report quoting incident 137 of 26 August. Alternative;y contact Crimestoppers, anonymously, on 0800 555 111 or report online at www.crimestoppers-uk.org.
Cyclist seriously injured in Cherry Hinton collision
Woman in critical condition after five-car crash on A14
Fears Cambridge market could shrink following revamp
Woman found dead in Little Shelford
