Police in Glasgow said 19 people were arrested and four police officers were injured during celebrations after Celtic won the premiership.
An estimated 25,000 fans gathered in the city center around Glasgow Cross and Merchant City on Saturday.
The damage caused by the fans was branded “unacceptable” by Glasgow City Council.
Teams worked overnight to remove a “significant” amount of trash, debris and broken glass left in the area.
After the game against St Mirren, fans gathered at Trongate and were seen climbing lampposts and traffic lights, as well as setting off colored flares.
Bus stops and traffic lights were damaged in the area, which was part of the route for Cancer Research UK's Race for Life held on Sunday morning.
Nineteen people were arrested on the day for various offences, and Police Scotland said investigations into a number of incidents were continuing.
Four police officers were injured in the disturbance and received medical treatment.
Supt John Menzies said: “We would like to thank our partner agencies and the wider public for their support.
“Unfortunately, we have experienced some disruptions, including the use of fireworks and alcohol-related crimes. We have taken decisive action to prevent these from escalating.”
“Violence and assault against members of the public and police officers is completely unacceptable and we remain committed to identifying those responsible.”
“It's depressing and unacceptable.”
Glasgow City Council leader Susan Aitken wrote on social media platform X:
“It is depressing and unacceptable that once again a significant number of adults are unable to celebrate their team's successes while respecting their fellow citizens and public property.”
A Glasgow City Council spokesperson said a “significant” amount of rubbish, debris and broken glass was left in the area around Glasgow Cross after the crowd dispersed in the early hours of Sunday morning.
He said: “Our teams carried out an extraordinary clean-up operation overnight and the area is now clean.
“There has been damage to infrastructure such as bus stops and traffic lights, but we don't yet know the full extent of the repairs needed.
“This kind of damage, disruption and anti-social behavior remains unacceptable. We should be able to celebrate other people in the city and show basic consideration at the same time.”
Fans began gathering around Glasgow Cross and Trongate for an informal celebration immediately after Saturday's match.
Surrounding roads were closed to traffic and a large number of police were stationed in the area.
The team were presented with the trophy at Celtic Park after defeating St Mirren 3-2.
Although the league title was decided before the game, home games give fans an opportunity to celebrate the victory.
Celtic declined to comment on Saturday's event in the city centre.
Ahead of the race, Glasgow City Council called on football fans to “respect our city” in celebrations.
They said: “In recent years, when supporters have gathered to celebrate in places such as Trongate and George Square, many have felt uncomfortable and even unsafe.”
“Residents and businesses had to deal with the aftermath of littering, vandalism and other anti-social behavior after the crowds went home.”
In 2023, Celtic fans gathered at Glasgow Cross to celebrate winning the Premiership trophy.
