A 16-year-old boy was stabbed in Olbrook at around 10.20pm on April 2.
An E-fit has been released by police following the GBH incident in Sutcliffe Avenue, Oldbrook.
The victim was walking along the redway in the direction of Fishermead when was approached by a man and stabbed in an unprovoked attack.
He sustained stab wounds to the back and a cut to his left arm as a result of the incident, and was taken to Milton Keynes University Hospital for treatment.
He has since been discharged.
Det Con Kim McHugh said: “This was an unprovoked attack which left a 16-year-old boy requiring hospital treatment.
“I am appealing for anyone who recognises the man in this E-Fit, or anyone who witnessed the incident or has any information relating to it, to please get in touch by calling the Thames Valley Police non-emergency number on 101.”
If you have any information relating to this case, please call 101 quoting reference ‘43170096086’, or contact Crimestoppers anonymously.