A teenager from Margate is among five youths arrested in connection with a serious assault in Canterbury last night (June 6).
Witnesses are being sought by the Kent and Essex Serious Crime Directorate after Kent Police was called to Whitefriars Street at around 6pm to reports that a teenage boy had been assaulted.
The youngster is thought to be a foreign exchange student.
Patrols and the South East Coast Ambulance Service attended the scene and the teenager was conveyed to a London hospital by air ambulance with serious injuries.
A 16-year-old boy, a 16-year-old girl and two 15-year-old boys, all from Canterbury, and the 17-year-old boy from Margate have been arrested as part of the investigation.
Enquiries are ongoing into the circumstances surrounding the incident.
Officers would like to thank all those who have already got in contact regarding the assault and they are urging anyone else who witnessed the incident or who has information that may assist the investigation to call Kent Police on 01843 222289 quoting reference 06-1409.