A hunt was launched for a knife man reportedly seen at Finsbury Park Underground station yesterday afternoon.
British Transport officers are appealing for passengers with information to get in touch.
The police were called at 2.20pm after members of the public reported seeing a man with a blade.
Officers attended, and a search was carried out, but the man was not located.
Enquiries are ongoing. Anyone with information is asked to call British Transport Police on 0800 40 50 40, or text 61015 quoting 159 of 03/01/2016.
Alternatively, information can be passed to Crimestoppers on 0800 555 111.
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