VIDEOS: U21 Manchester derby descends into violence as supporters clash in the stands

Passion at derby games is one thing but this is way over the line.

Punches were thrown at Old Trafford last night when groups of Manchester United and Manchester City fans clashed in the second half of United U21 side's 4-0 victory over their fierce rivals. Stewards were dragged into the melee as they attempted to separate the supporters and three arrests were made according to The Daily Mail.

Not great. Few punches thrown. Order restored. pic.twitter.com/8kFMJhCsvQ

— Mike Keegan (@MikeKeegan_DM) May 12, 2015

Almost 17,000 people had availed of free entry to the stadium and despite the fact that the crowd trouble was instigated by tiny pockets of so-called fans, this is not nice to see in any capacity.

Manchester United and Manchester a City fans during their u21 game tonight (via @Footy_Fooligans) #MUFC #MCFC pic.twitter.com/OpbBWBt7k6 — The Away Fans (@theawayfans) May 12, 2015