The mother of two Catholic students denied access to a State-funded school bus is planning to issue legal proceedings against the official at the centre of the row if her children are not allowed to use the service.
Solicitor John Devane has written to the chief executive officer of Limerick City Vocational Education Committee, Deirdre Frawley, on behalf of his client, Bernadette Gleeson, whose two children were denied access to a school bus.
The row started when it emerged that the Gleeson children were not entitled to use the special bus service to travel to their predominantly Protestant secondary school, Villiers, on Limerick's North Circular Road.
In a letter to Deirdre Frawley, CEO of Limerick City VEC, who also acts as transport liaison officer, Mr Devane, said he had been instructed to issue legal proceedings unless his client's children were allowed to use the service.
The original letter on VEC-headed paper that sparked the row stated: "Villiers School is a school under Protestant management and only children of Protestant denominations have an entitlement to transport on the special Villiers School bus service."
Mr Devane described the situation in a letter to the CEO of Limerick City VEC as "absolutely appalling".
"Unless you have failed to take notice, the Republic of Ireland has now become a multi-denominational country," he said. "The City of Limerick VEC should move with the times.
"It is no longer the case that the City of Limerick, or any other body government, professional or otherwise, can have a bigoted attitude towards the members of one religion as opposed to those of another," said Mr Devane's letter.
Meanwhile, Deirdre Frawley was yesterday standing by the regulations which have so far prevented the Catholic children from using the free bus service to Villiers School.
In an interview on Live 95FM local radio station, she confirmed that the school bus service was only provided to Protestant children who live "more than three miles" from their nearest Protestant school.
There is no other Protestant secondary school in Limerick and the nearest one outside the city is in Cork.
Ms Frawley said that access to the service was based on "entitlement" and that as Villiers was the only Protestant secondary school in Limerick, Protestant children had an "entitlement" and were "eligible" to use the free school bus service.