WASHINGTON - Facebook chief executive Mark Zuckerberg will testify in Congress next week over the hijacking of users' personal data by political consultancy Cambridge Analytica, a House committee announced Wednesday.

The hearing, set for 10 am April 11 before the House Energy and Commerce Committee, aims to "shed light on critical consumer data privacy issues and help all Americans better understand what happens to their personal information online," committee chairman Greg Walden and ranking Democrat Frank Pallone said. "We appreciate Mr. Zuckerberg's willingness to testify before the committee, and we look forward to him answering our questions." Zuckerberg will likely face multiple congressional hearings as his social media giant battles a firestorm set off by the Cambridge Analytica scandal. The British consulting firm, which was hired by Trump's presidential campaign, acquired data of 50m Facebook users to create psychological profiles that could be used to influence US voters. Zuckerberg also has been invited to appear before the Senate Judiciary Committee on April 10, alongside Google chief Sundar Pichai and Twitter head Jack Dorsey.

His participation is yet unconfirmed but Senator Dianne Feinstein told the San Francisco Chronicle Zuckerberg had agreed to attend that hearing.

Data on ‘up to 87 million’ Facebook users shared with UK firm

Facebook said Wednesday data on as many as 87 million users was improperly shared with British political consultancy Cambridge Analytica, far greater than the 50 million previously estimated.

Facebook’s chief technology officer Mike Schroepfer made the announcement in a statement announcing the implementation of new privacy tools for users of the huge social network.

“In total, we believe the Facebook information of up to 87 million people - mostly in the US - may have been improperly shared with Cambridge Analytica,” he said.