The opposition pushed through a bill on Wednesday calling for the establishment of a state inquiry into claims the country's police spied on public officials without authorization.
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The bill, proposed by Likud MK Yoav Kisch, passed its preliminary reading 59-58.
Meretz MK Yair Golan left the plenum during the vote for an interview with Channel 12, giving the opposition the majority.
After the vote, Yesh Atid MK and Knesset Public Security Committee Chairwoman Meirav Ben-Ari said. "This bill was passed only thanks to the ignorance that swept the plenum," according to a report by The Times of Israel.
"How many [opposition] Knesset members came to the discussions we held in the committee on the subject?" Ben-Ari asked.
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The Israel Police were accused earlier this year of extrajudicial use of the NSO Group's Pegasus spyware on Israeli citizens.
Financial daily Calcalist reported in February - without citing sources or providing evidence - that police had spied on many high-profile figures.
Investigations and a report by Deputy Attorney General Amit Marari found the account to be largely false.
Pegasus software gives NSO's customers complete control over the phones of their targets, including images, documents, chat and call history, location data, and the ability to remotely operate their camera as well as eavesdrop on conversations.
i24NEWS contributed to this report.