Margaret Ferier said she traveled because she felt “much better” – but also returned home after receiving a positive test.
The MP, who was removed from her party, said “there is no excuse for my actions”.
Nicola Sturgeon tweeted her support for the decision to suspend the MP.
She said: “This is completely indefensible. It is difficult to express how angry I am on behalf of the people across the country who are making heavy sacrifices every day to help defeat Kovid.
“The rules apply to everyone and they are in place to keep people safe. @Ianblackford_MP is right to stop the scourge.”
One of Ms Ferrier’s former colleagues, Glasgow East MP David Linden, also said he “should resign” as an MP.
He spoke on the BBC’s Question Time program.
- What is self-isolation and who should do it?
Ms Ferier said she took the test on Saturday after having “mild symptoms” but traveled to London on Monday because she was feeling better.
Rutherglen and Hamilton West MP spoke in a debate on the coronavirus in the House of Commons on Monday and said she had received positive test results tonight.
She then returned by train to Scotland on Tuesday.
Ms Ferrier said she had informed the police and deeply regretted her actions.
“I traveled home by train on Tuesday morning without seeking advice. That was also wrong and I’m sorry,” she said.
“I’ve been isolating myself at home ever since.”
Police in Scotland confirmed they had been linked to Ms Ferier, saying police were “investigating the circumstances” and liaising with the capital’s police department.
SNP Westminster leader Ian Blackford said he had spoken to Ms Ferier, who said what she had done was wrong.
He said: “Margaret will address the Commissioner for Parliamentary Standards as well as the police. Tonight I will stop whipping Margaret.”
When someone tests positive for a coronavirus, it usually causes sympathy and concern.
But that’s not enough for Margaret Ferier, after she admitted to breaking Covid’s rules of self-isolation.
She may have apologized for attending parliament and made long journeys on public transport with the coronavirus, but gave no explanation.
Her behavior is far more serious than the travel disruption that cost Catherine Calderwood her job as chief medical officer in Scotland.
It is also more serious than travel to block Prime Minister’s adviser Dominic Cummings, who called on Ms Ferier to resign.
It is not surprising, then, that the Conservatives are pushing for Ruderglen and Hamilton West to step down.
She has already been suspended by the SNP, and party leader Nicola Sturgeon described her behavior as “completely indefensible”.
House of Commons spokesman Sir Lindsay Hoyle wrote to lawmakers Thursday night to say he was informed after Ms. Ferier told the SNP whip on Wednesday afternoon that she had tested positive for Covid-19.
“The authorities of the Chamber immediately took all necessary steps in accordance with their legal obligations and PHE. [Public Health England] Guidelines, “he wrote.
“Based on the information provided to the contact tracking system, only one person has been identified as a close contact in this case and is now isolating himself.”
A spokesman for the House of Commons said the Chamber’s priority was to ensure the safety of workers at the mansion.
The statement added: “We have been closely following the public health guidelines on the action to be taken following a confirmed Covid case on the ground.
“Parliament has a dedicated support team for testing and tracking teams in the United Kingdom, which acts as a central point of contact in case of suspicion or confirmed cases where a person has worked on the estate.”
“Dangerous and shameful”
Labor MP Ian Murray said Ms Ferier had shown “astonishing recklessness”.
“It has put passengers, railway staff, fellow MPs, Commons staff and many others at an unacceptable risk,” he said.
“Breaking the rules twice is simply unforgivable and undermines all the sacrifices made by its voters.”
The Aslef train drivers’ union described its actions as “both dangerous and disgraceful”.
Holyrood Scottish Conservative leader Ruth Davidson said she consciously took advantage of public transport after a positive Covid-19 test put her life at risk
Ms Ferrier was one of the MEPs who called on Prime Minister’s adviser Dominic Cummings to resign following controversy over his visit to the north-east of England during the blockade.
At the time, she said his actions “undermined the sacrifices we all make” and described his position as “untenable”.