Footage appearing to show football fans brawling outside Wembley Stadium following the FA Cup semi-final has appeared online.
A video appears to show opposing fans standing off against each other before punches are thrown.
One man, wearing a red hat, appears to punch another fan before his hat is knocked off by a succession of punches.
A woman watching the scenes can be heard in the background saying: "Oh no there's kids down there.
"No not the young boy. Leave it out, he's only a kid. Why would you punch a kid like that?"
Metropolitan Police said 16 people were arrested for public order offences, but none were violence related.
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