Derbyshire Police are appealing for witnesses after a serious assault in a Derby park.
It was reported that a man was assaulted in Darley Park at around 12:45am on 10 October, after being approached by two men.
The men are described as white, of slim build and wearing all black clothing, with grey and black Nike Air Force 1 trainers.
The victim sustained a stab wound to his chest and required treatment for serious injuries at hospital.
Anyone with information is asked to contact Derbyshire Police with reference 26*610080.
Members of the public can also anonymously contact the independent charity CrimeStoppers, on 0800 555 111, or by visiting the CrimeStoppers website.