39 arrests were made and four officers were injured during clashes with Legia Warsaw fans on Thursday night.
West Midlands Police released a statement on the trouble prior to the match.
βWe were faced with disgusting and highly dangerous scenes as trouble flared ahead of the fixture between Aston Villa and Legia Warsaw,β it read.
βWe had a significant policing presence in place because of safety concerns. This stemmed from visiting fans having been involved in previous matchday disorder.
βThe disorder is believed to have sparked when tickets were not distributed by the away club to supporters outside the ground, as had been anticipated.
βDuring the disorder four officers were injured β with one taken to hospital β along with two police horses and two police dogs as missiles including flares were thrown towards them. Thankfully their injuries are not believed to be serious.β
Aston Villa progressed to the knockout stages of the Europa Conference League with a 2-1 win.
Best moment was when one βUltraβ stacked it.