FIFA has been invited to explain its decision to dismiss Prince Ali bin al Hussein's request to use transparent voting booths in Friday's presidential election by the Court of Arbitration for Sport, which will issue its verdict on the matter by Thursday morning.

Prince Ali, one of five candidates bidding to succeed Sepp Blatter, is seeking reassurances over the voting procedure for the election and had called for a postponement, according to lawyers claiming to represent the Jordanian.

Prince Ali has taken the case to CAS, which issued a statement on Tuesday.

It read: "The Court of Arbitration for Sport [CAS] has registered an appeal and request for urgent provisional measures filed by HRH Prince Ali Al Hussein of Jordan against a decision taken by the FIFA ad-hoc electoral committee dated 15 February 2016 in which it declined to incorporate the use of transparent voting booths for the upcoming FIFA presidential election.

"HRH Prince Ali Al Hussein seeks an order that FIFA be directed to use transparent voting booths, as well as independent scrutineers, in order to safeguard the integrity of the voting process and to ensure that the vote is conducted in secret.

"FIFA has been invited to file written observations in reply to Prince Ali's request.

"The request for provisional measures will be decided by CAS no later than the morning of Thursday 25 February 2016. In the meantime, the CAS will not comment on this pending matter."

"FIFA has been invited to file written observations in reply to Prince Ali's request." - CAS statement

Lawyers for Prince Ali said FIFA had blocked an attempt to take the case to CAS, but now the tribunal body will rule on the case.

Prince Ali had already planned to test FIFA's resistance to transparent voting booths by having some sent to Zurich ahead of Friday's vote.

FIFA, which is this week expected to approve wide-scale reforms to ensure openness and guard against the corruption which has engulfed it in recent times, insists it is sufficient for delegates from the 209 voting nations to hand over cameras and mobile phones before entering the booths at Hallenstadion in Zurich.

It's understood that Prince Ali wishes for the rules to be clarified in case delegates flout the ban.

Voters reportedly documented how they had voted in June's presidential election, which Blatter won ahead of Prince Ali before resigning days later, prompting this week's extraordinary congress and leading to Prince Ali's request as he bids to ensure a fair election.

Prince Ali is standing for election alongside Sheikh Salman bin Ibrahim al Khalifa of Bahrain, UEFA general secretary Gianni Infantino, South Africa's Tokyo Sexwale and Jerome Champagne, a former FIFA deputy secretary general from France.

Sheikh Salman, the Asian Football Confederation president, and Infantino are considered the favourites to succeed Blatter, who first became FIFA president in 1998.