Police have warned about the dangers of setting off flares and pyrotechnics inside football stadia as they continue to investigate last Saturday's off-field incidents at Stamford Bridge.
The Met's Central Football Unit and the FA are still reviewing footage after several flares, 'smoke bombs' and 'thunderflash' pyrotechnics were set off during Chelsea's 2-1 loss to Crystal Palace.
Five people were arrested on Saturday, including two for possession of a flare. Officers also recovered a number of flares and pyrotechnic devices that were found hidden inside toilets at the stadium and a rucksack full of pyrotechnics that was found in nearby Brompton Cemetery.