A woman in her 70s had her purse stolen in King Street, Kettering.
The alleged theft happened some time between 11.30am and 11.55am yesterday (Wednesday, April 13) while the woman was walking down King Street.
It is believed a man approached her and took her purse from her, causing her to fall.
The man was wearing a maroon jumper.
Witnesses, or anyone with information, should contact Northamptonshire Police on 101 or Crimestoppers anonymously on 0800 555 111.