The premier says the province is now finally able to pay its bills.
There is speculation the mayors were linked to former premier Cassel Mathale and Julius Malema.
The organisation says accountability is very important and is encouraging a thorough investigation.
The new Limpopo premier has suspended Nnana Manamela and Morebudi Thamaga.
The ANC has defended its decision to appoint Cassel Mathale as a Member of Parliament.
The ANC in Limpopo says at least four more cabinet MEC's will be sworn in today.