RTE star Claire Byrne is recovering today following an operation to remove her appendix.
The Daily Show host called in sick to Montrose this week -- and was temporarily replaced by former Xpose host Lorraine Keane.
However, it has since emerged that doctors had to operate on the broadcaster to remove her appendix.
An RTE spokesperson said: "Claire is having her appendix removed. Daithi and all the team wish her a speedy recovery and look forward to her return."
RTE bosses scrambled to get Lorraine to stand in for stricken Claire after she phoned in sick on Monday.
And station bosses insisted that Lorraine's turn on The Daily Show was only temporary -- pointing out that they have a panel of presenters they call on in the event that Daithi or Claire are ill.