Police are investigating claims that Rangers players used "sectarian language" during their title celebrations.

A probe was launched after TikTok footage emerged of players and others singing inside a function suite.

"We are aware of a video circulating on social media apparently showing Rangers players using sectarian language while celebrating on Saturday," a Police Scotland statement read.

"We are assessing its contents and will liaise with the Crown Office and Procurator Fiscal Service as part of our enquiries."

Rangers declared themselves confident no criminality had taken place.

"It is deeply concerning that this video has been taken as genuine and has been shared widely including by some political representatives who should be mindful of their influence and legal processes," a club statement read.

"Our squad is richly diverse. Sectarianism is unacceptable and has no place in our club which is underlined by our Everyone Anyone campaign.

"We are confident that no criminality took place, we have sought legal advice and look forward to co-operating with Police Scotland."

Rangers earlier condemned the behaviour of fans in Glasgow following Saturday's title celebrations - claiming the actions of a minority have "besmirched" the club's name.

Scenes of disorder around George Square led to five police officers being injured and 28 arrests - with officers saying many more will follow.

Rangers released a statement last week urging fans to stay away from Ibrox and the city centre as Steven Gerrard's team collected the Premiership trophy. Now they have hit out at those who ignored that warning.

A statement read: "We are grateful to Scottish Government officials, Glasgow City Council and Police Scotland for the constructive engagement in the lead up to the weekend's game. We worked closely with the authorities for two weeks before Saturday's match to ensure a consistency of message.

"Sadly, a small minority of people behaved inappropriately and in a manner not reflective of our support. Some of the scenes were unacceptable and have besmirched the good name of Rangers Football Club.

"These so called 'fans' should reflect upon the values and ethos of our club, and consider the damage this does to the reputation of the club. We will continue to engage with authorities as required."

Scottish Football Association president Rod Petrie says the actions of supporters - which included fighting, public drunkenness and sectarian singing - brought "embarrassment to the national game".

He added: "Scenes that require the First Minister, Justice Secretary, Police Scotland and the Scottish Police Federation to issue condemnatory statements, and images that dominated the news agenda throughout the weekend, represent an abomination not a celebration.

"Those responsible for sectarian singing, for vandalism and for inflicting physical damage may attach themselves to football but cannot be considered football fans. Police Scotland have made a number of arrests and more are expected to follow.

"The Scottish FA has recently issued its equality, diversity and inclusion strategy, Football Unites. Events on Saturday at George Square served only to depict our game in the poorest light and we condemn the behaviour in the strongest terms.

"We empathise with fans who have been deprived of attending matches throughout this pandemic. That, however, does not excuse the behaviour of those who brought chaos to the streets in the name of football this weekend."

The Scottish Professional Football League also commented, saying the incidents were "simply the last thing that Scottish football needs".

An SPFL spokesperson said: "Rangers players, officials and fans rightly celebrated their dominant title win on Saturday and we offer our congratulations for what was a thoroughly-deserved trophy.

"However, the behaviour of many fans at Ibrox during and immediately after the game, and the subsequent major disorder in Glasgow city centre, was utterly shameful.

"As the club themselves have said, this behaviour was unacceptable, and especially so given the repeated advance warnings regarding social distancing.

"At a time when everyone in the game is working hard to enable long-suffering fans to get back into stadia, it is simply the last thing that Scottish football needs.

"The police, emergency services and ordinary members of the public did not deserve to be caught up in this melee. We fully support the actions of the courts, the SFA and the club in dealing severely with those who have so badly let the game down."