Calls for the United Kingdom to hold a second referendum on its membership of the European Union are growing.

A petition demanding a rerun of Thursday's vote which resulted in the British exit, dubbed a "Brexit," after the "leave" campaign won 51.9 percent to Remain's 48.1 percent, had garnered more than 3.5 million signatures by early Monday.

petition.parliament.uk

"We the undersigned call upon HM Government to implement a rule that if the remain or leave vote is less than 60 [percent] based on a turnout less than 75[percent] there should be a referendum," it states.

The website crashed multiple times on Friday after being inundated with thousands of visitors trying to access the petition, The Independent newspaper reports.

The British government is duty-bound to respond to any petition reaching more than 100,000 signatories, as they did in January after one was launched to ban Donald Trump from setting foot on U.K. soil.

Conservative lawmaker Ben Howlett said the House of Commons Petitions Select Committee will consider this one on Tuesday:

Further to 100s of emails as a member of @HoCpetitions Select Committee, we will be considering 2nd #EUref on Tues https://t.co/iE8QAmbMf1 — Ben Howlett MP (@ben4bath) June 25, 2016

James Corden, "The Late Late Show" host, is among numerous celebrities urging fellow Britons to sign the petition:

Sign, if you'd like to. I have. https://t.co/Wufycz02Lt — James Corden (@JKCorden) June 25, 2016

But not everyone is happy with the call for a second referendum. Some people say the result must be accepted and dealt with accordingly, including politicians such as the Labour Party member of parliament Mike Gapes.

I don't favour second referendum. We must accept the result and find best way to mitigate the damaging consequences https://t.co/LPMeyunm47 — Mike Gapes (@MikeGapes) June 25, 2016

The petition, which it has since emerged was actually launched by a "Leave" campaigner in the weeks before the vote, will also come as unwelcome news for Nigel Farage, the anti-EU leader of the UK Independence Party. But he doesn't have much cause to complain, given he said in May that a 52-48 win for the Remain side would be such a narrow margin that he'd fight for a second referendum to be held.

Update: The petition is now being investigated over allegations that some of the names that have been added could actually be fraudulent. According to the BBC, some 77,000 signatures were removed over the weekend.

"People adding fraudulent signatures to this petition should know that they undermine the cause they pretend to support," said lawmaker Helen Jones, who chairs the House of Commons petitions committee looking into the claims.