Statement from Dana Rosemary Scallon:
"It has come to my attention that yet further allegations, this time of a most untrue, malicious and vile nature, have been levelled against a member of my family.
"Let it be known that lawyers have already been instructed to forensically investigate a particular communication disseminating this vile and false accusation, which attempts to implicate me and destroy my good character.
"We have now been advised that all possible lines of enquiry regarding this communication are being pursued with prosecution authorities in the United States.
"May I assure the Irish people that I will leave no stone unturned to expose the malicious intent at the heart of these untrue allegations."