"If Mark Zuckerberg truly recognises the "seriousness" of these issues, as they say they do, we would expect that he would want to appear in front of the Committee and answer questions that are of concern not only to Parliament, but Facebook's tens of millions of users in this country", he said.
Facebook's founder Mark Zuckerberg has agreed to a private meeting behind the closed doors with a handful of European parliament's, carefully chosen members.
The revelations that the data of some 87 million Facebook users and their friends may have been misused by the consulting firm that worked on Donald Trump's USA presidential campaign, has been called a game changer in the world of data protection as regulators seek to raise awareness about how to secure information. The company's stock had a trading volume of 9,196,512 shares, compared to its average volume of 31,975,293.
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The data which got exposed was highly sensitive and revealed the personal details of Facebook users like their results of psychological tests.
Yet the question of whether Zuckerberg should explain himself publicly remains a point of contention.
"I will not attend the meeting with Mr Zuckerberg if it's held behind closed doors". "It must be a public hearing - why not a Facebook Live", he asked in a Tweet.
Facebook, in an emailed statement, said it accepted the "proposal to meet with leaders of the European Parliament and appreciate the opportunity for dialogue, to listen to their views and show the steps we are taking to better protect people's privacy".
Tajani said that simply showing up to explain himself was already a good move.
Mr Tajani had invited Mr Zuckerberg, saying that the 2.7 million European Union citizens affected by the data sharing scandal deserved a full explanation.
Reports from New Scientist states that the researchers at the University of Cambridge have uploaded user data from 3 million Facebook users onto a shared portal.
After Schroepfer faced a set of tough questions before on MPs' in place of Zuckerberg last month, Collins threatened to compel the Facebook CEO to appear before the committee, writing to Stimson: "It is worth noting that, while Mr Zuckerberg does not normally come under the jurisdiction of the UK Parliament, he will do so the next time he enters the country".
Zuckerberg has so far declined to appear, to the British lawmakers' annoyance.