There is strong suspicion over the removal of the officers, who are overseas trained.
One of them investigated Carlton Sports Network that is accused of violating the money laundering act, faking documents, criminal breach of trust, misuse and Customs offences.
This officer had even gone to Singapore to investigate and helped the state regain many millions of rupees misappropriated by the Rajapaksas.
The other two officers had investigated the highways ministry and the bunkering fraud at Hambantota port.