Three teenagers were arrested after a disorder in Hoggs Lane, Northfield, on Wednesday night (1 April). The road was closed for a short time as police officers and ambulance crews attended the incident.
Two other teens were reportedly assaulted in the disorder: a 17 year old boy received treatment for a slash wound to the hand at the scene and a 19 year old girl was reported to have been assaulted.
A 14 year old boy was arrested on suspicion of causing grievous bodily harm.
A 16 year old boy and a 17 year old girl were also arrested on suspicion of assault.
All three arrested teens are thought to be known to one another and inquiries into what happened continue.
Anyone who witnessed the incident or who has any information which may help investigating officers is asked to call West Midlands Police on 101.