www.bbc.co.uk/news/uk-england-london-37532493
Three people have been arrested after rival fans clashed outside West Ham's new London Stadium.
Violence flared after the Hammers'
1-1 Premier League draw with Middlesbrough on Saturday afternoon.
Two men were arrested on suspicion of affray and a third on suspicion of assaulting a police officer, Scotland Yard said.
Officers were also deployed inside the stadium during the match to deal with a separate disturbance, the Met said.
However, it was "quickly dealt with", the force said, and no arrests were made.
Police escorted Middlesbrough fans away from the stadium while officers contained some West Ham supporters.
There have been several crowd disturbances since the club moved to the former Olympic Stadium.
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