Uefa gives Infantino two-week deadline to release key documents
Uefa's letter contained 42 questions, covering Fifa's failed private investment proposals, its Peace Prize and the fallout from Folarin Balogun's World Cup red card.
European governing body Uefa has told Fifa it must release key documents and answer all questions relating to its governance and decision-making by a deadline of 2 November.
At the Fifa Council on Thursday, president Gianni Infantino apologised for his World Cup sell-off plan - but failed to offer a full explanation for how the proposal was devised.
In the letter seen by BBC Sport, Uefa general secretary Theodore Theodoridis said that world football's governing body had failed to address "a number of fundamental questions".
"Others remain unanswered, and the information and documentation requested have not been provided," it read.
The letter included eight pages containing 42 questions covering a number of issues, from the Fifa Forward Enterprise (FFE) private investment, to the Fifa Peace Prize and the controversial suspended ban given to USA striker Folarin Balogun at the World Cup.
"The withdrawal of FFE, the acknowledgement of mistakes and the announcement of 'potential governance reforms' do not answer how the relevant decisions were taken or why the Fifa Council was not involved at the appropriate stage," it continued.
"Any refusal to disclose information or documents should be justified individually, with a clear explanation of the specific grounds relied upon.
"These questions require answers now. They cannot be deferred until the next meeting of the Fifa Council - nor can future governance reforms substitute for scrutiny of decisions already taken and accountability for them."
Uefa did not outline what steps it intended to take should Fifa not meet the deadline, but will hope it adds to the pressure on Infantino ahead of November 18, the cut-off date for any candidates to confirm they are standing against him in next year's presidential election.
The questions were first put to Infantino at the Fifa Council last week, with Infantino then asking that they were submitted in writing.
Football Association chair Debbie Hewitt - a Fifa vice-president - said afterwards that "if he doesn't answer those questions, he's not fit to be Fifa president".
Fifa has been approached for comment.
Fifa faces question on FFE and funding to associations
Uefa has posed a great number of questions about FFE.
"When was the idea of FFE first explored, by whom and with what objective?" Uefa asked. "Who within Fifa authorised the development of the project, and which members of the Fifa administration were involved?
"What concrete measures will Fifa put in place to ensure that the shortcomings identified in the FFE process cannot occur again in the future?"
Uefa goes on to ask about the circumstances surrounding Infantino's initial presentation of the FFE plan to senior Fifa executives.
In particular, it raises a question about a potential investigation into Fifa in the United States. BBC Sport has approached Uefa to ascertain what this is in relation to.
"According to information received from several sources, two days before the vote by the bureau of the management board on the FFE proposal, the Fifa president informed members of the management board that the US authorities were investigating Fifa's administration," Uefa claim.
"Can he confirm whether such a statement was made and, if so, explain the information on which it was based, the reasons for raising it at that particular moment and whether he considered the potential pressure it might place on members immediately before their decision on FFE?"
Uefa requested information on whether Infantino would have held or expected to hold any position, role or function in FFE, either during or following his tenure as Fifa president.
The relationship with Joshua Kushner's Thrive Capital was covered in detail, asking why an agreement granting exclusivity to the company was signed without prior consultation of the Fifa Council.
"Why was Thrive Capital selected as lead investor, without any competitive tendering process and under conditions of strict confidentiality, despite its links to the family of the recipient of the Fifa Peace Prize?" Uefa asked.
Kushner is the brother of Donald Trump's son-in-law, while the US president was awarded the Peace Prize.
Uefa also requested answer about the award of the Peace Prize, specifically who decided to establish it, for what purpose, and who decided that Trump should receive it.
When the FFE plan was revealed in the days following the World Cup final, Infantino told the 211 member associations (MAs) they would receive $40m (£30m) if they backed it. He then set a deadline of 19 September for federations to accept his plans if they wanted to access an initial $20m (£15m).











