In a letter to Blazer, Lisle Austin, appointed interim president in place of the suspended Jack Warner, said the American was "terminated as general secretary of CONCACAF with immediate effect."
Austin said he considered Blazer had "grossly insulted and defamed" Caribbean associations by stating "that each member association was under investigation for bribery."
Blazer swiftly responded with a statement issued by CONCACAF's media office in New York that said the move was "unauthorised" and that the American remained in office.
Asian football chief Bin Hammam was at that time a candidate against incumbent FIFA president Sepp Blatter. He has since withdrawn and also been provisionally suspended by FIFA's Ethics Committee pending an inquiry.
Blazer is a member of FIFA's Executive Committee and is considered close to president Sepp Blatter.
Earlier Tuesday, Blazer had reported Warner to FIFA, saying that he had breached the terms of his suspension which bars him from "football activities," resulting in a strong retaliation from the Trinidadian's camp.
The acting president Austin wrote that Blazer had "improperly appointed five non-elected members of CONCACAF to congress."
"The above conduct is inexcusable and a gross misconduct of duty and judgement. It is apparent that you are no longer fit to act as secretary general of CONCACAF and to represent its members," the letter concluded.
"Under the CONCACAF Statutes, jurisdiction over the General Secretary rests solely with the CONCACAF Executive Committee which has taken no action.
"Further a majority of the Executive Committee Members have advised Mr. Austin that he does not have the authority to take such action.
"Chuck Blazer continues as CONCACAF General Secretary and with the full authority of his office. The Confederation continues its normal o
