By Osasu Obayiuwana BBC Sport

Hammam (right) said the report should have been kept confidential

Asian Football Confederation (AFC) president Mohamed Bin Hammam has questioned Fifa's decision to release the 2010 World Cup inspection report.

Speaking to BBC Sport in an exclusive interview in Kuala Lumpur, Malaysia, the AFC boss said the time-honoured tradition of keeping the report secret should have been maintained.

"These reports have always been confidential and I think we should have kept it that way," Bin Hammam said.

The report doesn't give me any indication of how I should vote Asian Football Confederation president Mohamed Bin Hammam

Hammam, a member of Fifa's 24-man executive committee, also claimed he had no advance knowledge of the plan to publish the report on Fifa's website.

"I never expected the reports to be released the way they were.

"If my opinion had been sought I would have been opposed to it," Hammam said.

The AFC president said the wording of the report has done little to clear any lingering doubts in the minds of Fifa executive members who will vote on Saturday.

"As far as I'm concerned, the report doesn't give me any indication of how I should vote.

"It doesn't put things clearly. When I read a report, I want to be told whether a country is qualified to host a World Cup or not.

"If the inspection team had come out clearly to say that one country was not qualified to host the World Cup, I would not vote for that country.

"In the case of South Africa, the words 'excellent', 'very good' and 'good' were used.

"These are words for something not bad. I would prefer things to have been put in black and white.

The AFC president said "other factors," would play a key role in determining how he will cast his vote in Zurich on 15 May.

"If a country bidding for the World Cup is a close country from my region or my continent, I'll prefer to vote for them if their chances are good.

"This is what will influence me, not the report," Bin Hammam said.