Police seized a 30cm blade found in a woman's handbag following a stop and search in Norwich.
Norwich Police tweeted on Saturday that intelligence from a member of the public led to them stopping the woman, 43.
The officers from the Norwich East Safer Neighbourhood Team (SNT) found a 30cm silver blade in the woman's handbag.
They shared an image of the blade with the tweet - branding it a 'nasty weapon'.
The tweet said: "Another particularly nasty weapon off our streets tonight.
"Public-provided intelligence led to Norwich East SNT officers stop-searching a female, 43, and finding this in her handbag.
"She's currently awaiting interview."
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