Michael Matheson is set to face a vote of no confidence in the Scottish Parliament this week as the embattled Health Secretary continues to face questions over an £11,000 data roaming bill.
The veteran SNP politician had initially claimed the charges on his official iPad were caused by an out-of-date sim card he used for work purposes while on a family holiday in Morocco.
But that story unraveled last week after Matheson then told MSPs the eye-watering data bill had been caused by his teenage sons using the iPad as an internet hot spot while they live streamed football matches.
The Falkirk West MSP claimed he did not initially disclose the information to "protect" his children.
The Health Secretary has repaid the £11,000 bill from his own pocket but now faces the prospect of a no confidence vote at Holyrood.
It comes as Anas Sarwar today repeated his call for Matheson to resign or be sacked.
The Scottish Labour leader said: "This is not about the data, it's not about his family, it's about him misleading the public, and that's why I think he should resign.
"I don't think the First Minister, or the Parliament, should have any confidence in Michael Matheson.
"He says he found out the truth on Thursday, but he continued to tell mistruths to the public for days after. He says he told the First Minister on Tuesday, the First Minister also told mistruths the day after.
"That's not acceptable in public life. You can't knowingly mislead the public and mislead Parliament. Therefore, he should resign."
Sarwar was speaking on BBC Scotland's Sunday Show where viewers were told that no government minister had agreed to appear.
Douglas Ross said his party was the only one with the numbers required to bring a motion of no confidence at the Scottish Parliament.
The Scottish Conservatives leader told the BBC: "Ultimately, we need to get questions answered by not just Michael Matheson but Humza Yousaf as well.
"I think viewers will be shocked and annoyed to hear that Michael Matheson won't appear on your show, Humza Yousaf won't appear, and even the Deputy First Minister pulled out.
"This is affecting all levels of government in Scotland as none of them are willing to come on and speak about really important issues because they can't - and won't defend - the Health Secretary who should have resigned by now."
The First Minister last week told MSPs he had "absolute confidence" in Matheson's ability to continue as a government minister.
He said: "Honest mistakes do happen, Michael has been a member of this parliament since its inception. All of us who have worked with him know he is a man of honesty and of integrity."
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