A man walking along a footpath in Lings was approached and attacked by two men.
The 32-year old victim was walking along the path which runs between the lake on Billingbrook Road and the underpass leading to Wade Meadow Court in Lings, Northampton.
Two men approached him, kicked him to the floor and stole his wallet and mobile phone.
The incident happened early yesterday (Sunday) at about 2am.
One of the offenders is described as a white or mixed race man of about 18 years old, 5ft 8in with a skinny, athletic build.
Witnesses, or anyone who knows anything about this incident, can call Northamptonshire Police on 101.
Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111 or use the anonymous online form at www.crimestoppers-uk.org.