A Fine Gael TD has called on the operator of the National Lottery to make the draw more "winnable".

Bernard Durkan said there should be an investigation after no winner of the top Lotto jackpot in almost six months.

The twice weekly National Lottery draw has rolled over 46 times since it was last won on 6 June.

Mr Durkan said: "This didn't happen in Ronan Collins' day. The jackpot has been stuck on €19m since September. What's going on?

"We need a full investigation and audit into the draw."

He added: "I'm not saying anything odd has happened, but it's the longest run in the history of the game so we need a bit of reassurance."

Mr Durkan, who is on both the Oireachtas Finance and Public Expenditure committees, called on the operator to make the draw more winnable.

"I call on the Chief Executive of Premier Lotteries Ireland, Andrew Algeo, to drop a couple of balls as a mark of good faith and make the draw more winnable. In 1988, there was 36 balls, 39 in 1992, 42 in 1994, 45 in 2006 before reaching a hefty 47 in 2015.

"I have never agreed with Premier Lotteries Ireland's decision to increase the number of balls to 47. I'm old enough to remember 1986 when there were 36 balls and that's how it should have stayed."

The TD said the prospect of winning is so remote that people "must be thinking Shergar would have a better chance at winning Squid Game".

He said: "In the interests of public confidence, I also want a full audit into why there has been no winner and a return of the independent observer from KPMG Stokes Kennedy Crowley, who used to stand beside the machine, keeping an eye on things.

The Fine Gael TD said he would be writing to Minister for Public Expenditure "Michael McGrath, whose department oversees this, to express my concern here and to get his views on the matter".

"As part of the terms of the National Lottery licence, almost 30c from every €1 spent on National Lottery games is returned to the Exchequer to be utilised by Good Cause projects," he added.