The storm went around the globe with South African police opening an investigation into claims that money was paid to secure the 2010 World Cup.
Australian police are looking into their country's bid for the 2022 World Cup, while in Venezuela investigators raided the country's football headquarters looking for evidence against a FIFA official held in the scandal.
Following the shock resignation of Blatter on Tuesday, focus has shifted to the US investigation which led to seven FIFA officials being arrested last week in Zurich.
Now battling cancer in hospital, the disgraced former North American football supremo said in testimony released by prosecutors that FIFA executives conspired to accept bribes during bidding for the 1998 and 2010 events.
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Blazer has admitted to charges related to his leadership of the North and Central American body CONCACAF and membership of FIFA's executive committee.
In a plea deal with US prosecutors, the 70-year-old agreed to wear a microphone and record conversations with other FIFA officials. None of the other suspects are named.
France beat Morocco in the bidding to stage that tournament. A document detailing the charges says that Blazer was present when a co-conspirator accepted a bribe in Morocco.
- Tainted World Cup bids -
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Blazer went on to admit that he and "others on the FIFA executive committee" agreed to accept bribes in conjunction with the selection of South Africa to host the World Cup in 2010.
The money allegedly went to Jack Warner, a former FIFA vice-president and another former CONCACAF head. He was suspended by the world body in 2011 for corruption.
Warner promised Wednesday in his native Trinidad and Tobago to tell an "avalanche" of secrets.
"I reasonably and surely fear for my life," he declared in a paid political broadcast and later added that "not even death will stop the avalanche that is coming.