The probe centres around claims the garda tried to force an abortion on a Dutch woman whom he had impregnated.
THE MOTHER-OF-TWO (35) CLAIMS SHE BECAME PREGNANT AFTER A ONE-NIGHT STAND WITH THE GARDA IN A CAR IN BALLYMUN.
Two young gardai who confronted the pair are alleged to have left the scene after their superior displayed his badge.
A major investigation is being carried out by officials from the Garda Siochana Ombudsman Commission.
Sources close to the garda told the Herald that he has been left "devastated" and has been told he should inform his family of the allegations.
The Herald understands that the officer will be suspended this week, with garda sources indicating that he could be facing dismissal.
The allegations made by the woman include:
* That she met the garda on Facebook and that the pair quickly began a relationship;
* That she became pregnant by the garda during their sexual encounter in the car in November 2012, with the baby subsequently born in June;
* That the garda purchased illegal abortion pills on the internet and requested that she take them so as to ensure a termination;
* She also claims that she felt intimidated by the garda and that he threatened her with deportation when she refused to have an abortion.
IT IS FURTHER UNDERSTOOD THAT THE SUSPECT IN QUESTION MAY BE QUIZZED BY CUSTOMS OFFICIALS BECAUSE THE ABORTION PILLS PURCHASED ARE ILLEGAL WITHIN THIS JURISDICTION.
The woman claims that he told her the medication cost him around €90.
The officer is believed to have been involved in a number of major garda investigations in recent months.