Police rushed to a suspected street brawl near South Harrow underground station - but everyone involved in the fight had dispersed by the time they got there.
Calls were made to police at around 8.30pm on Saturday (July 15) reporting a "large fight" in Northolt Road.
A Metropolitan Police spokesman said: "Officers attended but the people involved had fled the scene prior to their arrival.
Get information about a previous incident in Harrow with these links:
Video footage shows police cars and officers attending the suspected scene of the fight next to South Harrow Food and Wines store, just metres away from the tube station.
Police confirmed that none of those involved have been arrested.
It is not known if or how many people were injured during the incident.
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