The Association of Garda Sergeants and Inspectors wants an independent investigation into the tragic death of Sergeant Michael Galvin.
The father of three, who was under investigation by GSOC, appears to have taken his own life at Ballyshannon garda station last week.
He had been interviewed by the Garda Ombudsman in the context of a fatal road traffic incident in Ballyshannon on New Year's Day.
GSOC say they are 'satisfied' with how they dealt with an investigation.
In a statement, GSOC said this was inferred to them for investigation because there had been garda contact with the victim prior to the incident.
They say that investigation was proportionate and reasonable - and Sgt Galvin was later cleared of any wrong-doing.
However, in light of his death, GSOC have launched an independent review into the investigation.
Sergeant Galvin was not aware he had been cleared of any wrongdoing by the Garda Ombudsman.
The Association says the investigation was heavy-handed, and that he spent 10 weeks in dread, when he did nothing wrong.
General Secretary of the AGSI John Redmond told reporters today that the Galvin family and his widow Colette are devastated and have no confidence in GSOC
“They do not want GSOC involved in the investigation into Michael’s death.,” he said.
“They have no confidence in GSOC. They are particularly annoyed with GSOC and the way they handled the investigation into the allegations against Michael, and the way they went about their business,” he added.