Outbreaks of crowd trouble marred a rare away win for Norwich City, with two City fans reported to be in hospital.
The Canaries' 1-0 win at Bramall Lane was overshadowed by reports of bottles being thrown at goalkeeper Angus Gunn during the match - then a handful of City fans apparently being attacked by their rivals in the immediate aftermath.
Tension built throughout the game at Bramall Lane as Norwich put in an effective performance after Yanic Wildschut's 23rd-minute goal.
Blades fans were angry about time-wasting by Norwich players as they tried to see out the match.
But members of City's travelling army of 1,800 were furious at how they claimed it boiled over after the final whistle.
A tweet from @MickDennisReal read: 'Three #ncfc fans attacked by #sufc fans who went in through our exit. At least 2 in hospital.'
MORE: Norwich City chief Daniel Farke refuses to get embroiled in Sheffield United controversy
He added: 'Having row on here with #sufc fans who think it's big/clever to tweet provocative stuff from safety after 3 #ncfc fans attacked.'
Other tweets said:
? @Mattsthespirit Not nice to hear about a small portion of Sheffield United fans attacking away supporters, as well as throwing bottles at players! #ncfc
? @NichStarling Reports of #ncfc fans being attacked as they returned to coaches & players being pelted with coins & bottles at #sufc. Where are @syptweet?
? @its_hanhan I hope there is decent CCTV of the #sufc rotters attacking innocent #ncfc fans! Boyfriend's mate in hospital #sorelosers
? @murrellst3 My brother went to leave and women and children were getting hit, also seen on here scenes of people on the floor covered in blood
? @EdwardSeaman94 Saw one - innocent I must add - #NCFC fan get knocked clean out. Yes our performance wasn't pretty but no place for violence in football.
? @TheRug8 I trust @SUFC_tweets will be quick to identify those who threw bottles at @AngusGunn01 & those who assaulted #ncfc fans & ban them for life?
? @ShaunNcfc Great result.. shame about the Sheffield fans wanting to fight and cause trouble after the game #ncfc.
A spokesman for South Yorkshire Police said they had arrested a 22-year-old man from Norwich on suspicion of assault, and a 39-year-old man from Norwich on a public order offence.
? Were you caught up in the post-match trouble? Email steve.downes@archant.co.uk
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