Officers investigating the disorder at the Saturday's Millwall vs Wigan FA Cup semi-final at Wembley have arrested a 27 year old man.
The man was arrested earlier this morning at his home address in Lewisham on suspicion of theft of a police hat.
He was taken to a south London police station and has since been bailed to return on a date in June pending further enquiries.
Officers from Operation Arrowtip are looking to identify all those engaging in disorder and would encourage anyone with information to contact the investigation team on 020 8246 0076 (not 24 hours) or Crimestoppers on 0800 555 111. All calls will be treated in the strictest confidence."
More top news
British Bankers' Association head Anthony Browne warned that some banks could be moving abroad within weeks due to Brexit uncertainty.
A man said to be armed with dangerous articles remains inside an address in west London.
Police have begun a murder investigation following the stabbing of a 28-year-old in Shepherd's Bush,west London.