"Before kick-off, a section of the home crowd began chanting about the deaths of two Leeds United fans in Istanbul, Turkey," read a LUST statement.
"This was in full view of many stewards of Millwall Football Club and the Metropolitan Police. These chants are totally unacceptable and, in our opinion, caused alarm and distress to the Leeds fans within the ground.
"It is our opinion that offences under section five of the Public Order Act 1986 were being committed and ignored by officers of the Metropolitan Police.
"As a result of the inaction from stewards of Millwall Football Club and officers from the Metropolitan Police further chanting of a similar nature continued with other sections of the home support joining in, especially throughout the latter stages of the game where they were widespread throughout the ground.
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