A senior member at the Garda Ombudsman Commission (GSOC) has resigned.
The official, understood to be director of investigations Ray Leonard, submitted his resignation on Saturday.
Mr Leonard led the GSOC probe into claims that the watchdog's offices were under surveillance, which was the subject of the Cooke report.
The recently published
Read More:
GRA representative for Dublin's South Central Division Damien McCarthy said he wanted more resignations to follow at GSOC over a number of issues, "in particular the manner in which the Cook report, for want of a better word, disclosed certain facts".
He added: "As a result of that publication, the committee here in the south central have lost all confidence in the current commissioners. The conduct of that investigation proved to be unfair and it failed to address all the issues concerning independence and impartiality.
"We believe gardaí were not being treated in a fair and impartial manner."