A woman was hit in the face following a robbery in Daventry on Saturday morning.
She was walking in an alleyway between Kingsley Avenue and Windsor Close between 6.30am and 7am. The hit caused her to fall and her handbag was snatched as she fell.
The handbag was later recovered nearby and a quantity of cash had been stolen.
The offender is described as white and was wearing white trainers.
Witnesses, or anyone with information, are asked to call Northamptonshire Police on 101. Alternatively, they can call Crimestoppers on 0800 555111.