Armed police were spotted in Harold Hill after reports of a brawl in the area.
Police were called at around 9.44pm on Thursday (May 9) to reports of a group fighting near Lucerne Way.
The Metropolitan Police says specialist firearms officers were sent to the scene.
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No injuries were reported and no arrests have been made.
People on social media claimed they saw police vans in nearby Briar Road.
One person suggested that police were called after two boys were seen on a bicycle in balaclavas carrying machetes.
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