An Oireachtas committee meeting where the Secretary General of the Department of Public Expenditure and Reform, Robert Watt, was scheduled to face questions about the National Broadband Plan has been cancelled.

The Oireachtas Finance Committee meeting was due to take place at 3.45pm, but it has been cancelled and removed from the weekly agenda.

In a letter to the Oireachtas Finance Committee in recent days, Mr Watt outlined that the Minister for Public Expenditure and Reform Paschal Donohoe and his department officials have already been before the Budget Oversight Committee to discuss broadband.

He also pointed out that he will be attending the Oireachtas Communications Committee today.

That meeting will take place this afternoon behind closed doors in private session.

In his letter to the clerk of the Oireachtas Finance Committee, Mr Watt said: "You will be aware that officials of my department and I regularly engage with the Joint Committee on Finance, Public Expenditure and Reform, and Taoiseach and will of course continue to do so.

"We assume that attendance at the above two committees is sufficient on this occasion."

It emerged last month that Mr Watt warned the Government that the national broadband plan posed a great financial risk and provided questionable benefits.

Documents released by the Government in May showed that Mr Watt even went so far as to call for the process to be cancelled.