Newcastle have vowed to ban for life fans caught causing trouble in the wake of the derby defeat by Sunderland.
The Magpies today released a statement in which they said they were "embarrassed and appalled" by the behaviour of those involved in the disturbances after yesterday's 3-0 Barclays Premier League defeat at St James' Park.
It said: "We were embarrassed and appalled by the behaviour of a minority of so-called fans who last night were involved in disturbances and disorder in Newcastle city centre after the match."
A total of 29 arrests were made after pockets of violence broke out in the city centre after the game.
Video footage showed some supporters throwing bottles at police, while one man was photographed apparently aiming a blow at a police horse.
Bud, of West Yorkshire Police's mounted section, was back home in his paddock today safe and well after the suspected attacker was wrestled to the ground by officers, and Northumbria Police today said he has been bailed pending further inquiries.
Today the West Yorkshire Police Horses Twitter account tweeted a picture of Bud, saying he was not injured during the scuffle.
It said: "Bud is safe in his stable and appears fine. All our horses are fit and well, resting and relaxed."
Three police officers were injured during the clashes as sirens rang out across the city centre in the immediate aftermath of the game.
Yesterday Chief Superintendent Steve Neill, of Northumbria Police, said: "The vast majority of fans were well behaved today and enjoyed the Tyne-Wear derby for the great occasion that it is.
"Disappointingly, there was some disorder involving what appear to be Newcastle United supporters following the match in the city centre, including an incident at Central Station.
"Disruptive behaviour of any kind is not tolerated. Inquiries will take place into these incidents and action will be taken against all those involved."
A crowd of 52,355 packed into St James' to see Paolo Di Canio's Sunderland upset the odds and record their first derby win on Tyneside for 13 years to boost their chances of avoiding relegation.
Defeat left Newcastle, who bowed out of the Europa League on Thursday evening, only two points better off on 36, five clear of the drop zone with just five games to play.