Small group of supporters ejected after supposedly mocking fans . Eight people were arrested at Old Trafford in relation to Manchester fans . But police praised ' overwhelming majority ' of fans for their behaviour . Manchester United beat rivals City 4 - 2 on Saturday afternoon .
Small group of supporters ejected after supposedly mocking disaster . Eight people were arrested at Old Trafford in relation to Manchester derby . But police praised 'overwhelming majority ' of fans for their behaviour . Manchester United beat rivals City 4-2 on Sunday afternoon .