Teenager's arm broken after he was attacked with a metal pole in Hemel Hempstead
Hertfordshire Police say that the teenagers were having a celebration on the field.
An appeal has been launched after a 16-year-old boy was assaulted with a metal pole while celebrating the end of his GSCE exams with friends.
A group of teen friends were on the field at Hemel Hempstead Rugby Club on Chaulden Lane at around 8.15pm on June 23 when a man assaulted one of them with a pole.
The man, who was known to the group, left the victim with a broken arm.
Detective Constable Natasha Gibbings, who is investigating, said: “An 18 year old man from Hemel Hempstead has been arrested on suspicion of assault (GBH).”
DC Gibbings added: “He has been bailed until Monday 25 July while our inquiries continue.”
People with information are asked to call the non-emergency number 101 or email DC Gibbings here, quoting crime reference 41/50099/22.