Rangers have called for SPFL chief executive Neil Doncaster to be suspended and say they have evidence that ‘raises serious concerns’ over the governing body.
In a statement released on Saturday the club have also called for an independent investigation to be launched.
Rangers have called the evidence, provided to them by a ‘whistleblower’, ‘alarming’ and say they won’t be ‘bullied in to silence’.
The statement said: “We believe it is in the interests of all Scottish clubs and supporters that the evidence, which is alarming, be addressed as quickly as possible.
“The voting debacle and the evidence we possess raise serious questions concerning the corporate governance of the SPFL.”
The club’s interim chairman Douglas Park said: “The lack of leadership and responsibility from the SPFL as a members’ organisation has shocked me. If ever there was a time for complete openness and transparency, it is now.
“Crucial decisions are being made on the issues of promotion and relegation behind closed doors and without proper time for consideration or debate.
“The farcical conduct of this affair seems to me to bring the corporate governance and business operations of the SPFL into sharp focus.
“As a member club, we are disturbed by the evidence that has been presented and feel there is no choice but to call for an independent investigation into this entire matter.
“Each member of the SPFL board has a duty to its members to ensure that such an investigation is instructed without delay.
“All we ask for is equality and respect. In the past few days, we have become alarmed at a seeming lack of even-handedness and fair play from the SPFL. This is surely unacceptable and, if substantiated, must be remedied.
“Other member clubs, who have seen the evidence we hold, share our concerns.
“We call for the suspension of the SPFL’s Chief Executive, Neil Doncaster and its legal adviser, Rod McKenzie while an independent investigation is conducted.”
In response SPFL Chairman Murdoch MacLennan said: “It is extremely concerning that Rangers have chosen to make a number of very serious allegations against the SPFL, its corporate governance, its culture, its office-bearers and its business operations.
“In the often-heated atmosphere of Scottish football, rumour and misinformation can very quickly reach fever-point. However, allegations of a lack of even-handedness and fair play go to the very integrity of the league and I would expect Rangers Interim Chairman Douglas Park to present compelling evidence to back up his claims, or to withdraw them.
“I anticipate that the SPFL Board will convene early next week to discuss a wide variety of issues and I will be writing to Mr Park asking him to urgently communicate any and all information he possesses in order that the board can take whatever steps are necessary.”