More than two million people have signed an online petition for a second referendum on a British exit from the European Union.

The online petition has more signatures than any other on the House of Commons website. Since it passed 100,000 names, Parliament will consider it for debate, the BBC reports.

However, some media outlets were reporting Sunday that many names were fake. The House of Commons petitions committee tweeted that it had “removed about 77,000 signatures which were added fraudulently” and said “We will continue to monitor for suspicious activity.”

The Telegraph reported that while hackers in online chatroom 4 Chan were claiming responsibility for the fake names, the petitions committee had denied evidence of hacking.

The online petition site, hosted by the House of Commons website, crashed Friday because so many people tried to access it, the Associated Press reported. The petition also called on the government to implement a rule saying that if either side won less than 60% of the vote based on a voter turnout of less than 75%, there should be another referendum.

The voter turnout on Thursday was 72%, and “leave” won with 52% to 48% for “remain.”

Officials said Friday that they saw unprecedented interest in the measure. Prime Minister David Cameron said there would be no second referendum. However, Parliament member David Lammy has tweeted “We can stop this madness through a vote in Parliament” and that there should be a vote in Parliament next week on whether to move forward with Brexit.

Get The Brief. Sign up to receive the top stories you need to know right now. Please enter a valid email address. Sign Up Now Check the box if you do not wish to receive promotional offers via email from TIME. You can unsubscribe at any time. By signing up you are agreeing to our Terms of Use and Privacy Policy . This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Thank you! For your security, we've sent a confirmation email to the address you entered. Click the link to confirm your subscription and begin receiving our newsletters. If you don't get the confirmation within 10 minutes, please check your spam folder.

Contact us at letters@time.com.