Aontú has announced that it will table a no-confidence motion next week in Tánaiste Simon Harris over the "crisis" in Children's Health Ireland (CHI) and in the wake of the death of nine-year-old Harvey Morrison Sherratt.
Peadar Tóibín, leader of Aontú, said that Mr Harris had failed significantly to deliver on the promise he made when he was health minister, that children would not wait longer than four months for a scoliosis operation.
Mr Tóibín said the Tánaiste was not fit to be a minister in the Government and his party was calling for his resignation.
The Meath West TD said the issue was extremely serious and what happened in CHI was shocking.
Meanwhile, it is understood that the Government is likely to table a confidence motion in Mr Harris this week rather than waiting for the Aontú no-confidence motion to be debated next week.
Mr Harris and the Minister for Health Jennifer Carroll MacNeill met Harvey's parents in recent weeks.
Harvey, who had spina bifida and scoliosis, died in July and was subject to delays in accessing urgent scoliosis surgery.
Last year, Harvey's mother Gillian Sherratt and his father Stephen Morrison, said that he had been removed from a CHI waiting list for urgent scoliosis surgery without their consent or knowledge.
Harvey received spinal surgery last November after being first placed on the waiting list in February 2022.
In August, a spokesperson for Mr Harris said that he had sought, through the Minister for Health, a "full multidisciplinary report on the timeline of care provided to Harvey".
Asked about Aontú no-confidence motion, the Tánaiste said: "The Government will address this matter very swiftly. It's not a surprise. It's been well talked about by them for a number of weeks. We'll addressed that very swiftly in the couple days".
Asked if the Government countermotion will happen this week, Simon Harris said: "That's a matter for the whips. I think that could well happen, generally Government move confidence motions quite quickly in these matters."
