Israel's government will set up a commission of inquiry to examine allegations that the police used spyware to hack the phones of Israeli public figures without authorisation.
Officials, protesters, journalists, a son of former Prime Minister Benjamin Netanyahu and two aides were targeted, the newspaper Calcalist said.
A witness in Mr Netanyahu's corruption trial was also allegedly monitored.
Prime Minister Naftali Bennett said the reports, if true, were "very serious".
Reports say the police used Pegasus software, developed by NSO, an Israeli surveillance firm. NSO has faced widespread allegations that the product has been sold to and misused by authoritarian governments across the world.
The company has insisted that it does not operate the software once it is sold to clients and has previously stated that it could not be used to track Israeli citizens. It has not commented on the latest development.
Pegasus infects phones, allowing operators to extract messages, photos and emails, record calls and secretly activate microphones and cameras.
"This tool (Pegasus) and similar tools are important tools in the fight against terrorism and severe crime. But they were not intended to be used in phishing campaigns targeting the Israeli public or officials, which is why we need to understand exactly what happened," Bennett said in a statement.
The prime minister, who replaced Netanyahu last June, said he would discuss the matter with the newly appointed Attorney General, Gali Baharav-Miara, and that they would "not leave the public without answers".
President Isaac Herzog also expressed concern.
"We must not lose our democracy. We must not lose our police. And we must certainly not lose public trust in them. This requires an in-depth and thorough investigation," he said.
Public Security Minister Omer Barlev said the commission of inquiry would be headed by a retired judge and would "conduct an in-depth investigation into violations of civil rights and privacy during the years in question".
In a report published on Monday, Israeli business daily Calcalist said police hacked the phones of dozens of Israeli citizens.
The surveillance was conducted by the force's cyber-SIGINT unit to "phish for intelligence even before any investigation had been opened against the targets, and without judicial warrants", according to the newspaper.
The list of targets allegedly included:
- The director-generals of the ministries of transport, finance and justice
- The leaders of protests organised by disability rights groups and Israelis of Ethiopian descent
- The mayors of Netanya, Mevaseret Zion, Kiryat Ata and Holon
- Witnesses and some of those questioned as part of an investigation into Case 4,000, which concerns allegations of corruption against Mr Netanyahu and Shaul Elovitch, the controlling shareholder in Israel's biggest telecommunications company Bezeq
- The CEO of the Walla news website, which was previously owned by Bezeq, as well as Walla's former editor-in-chief and other Walla journalists
- Netanyahu's son Avner and two of the former prime minister's media advisers
- A supermarket magnate and the chairman of the workers' union at Israel Aerospace Industries
- According to Calcalist, the hacking and collecting of information from their phones took place while the police force was led by Roni Alsheikh, who was commissioner between 2015 and 2018.
Last Wednesday, Israeli media reported that police hacked the phone of Shlomo Filber, a former director general of the communications ministry and key witness in the ongoing trial of etanyahu on charges of bribery, fraud and breach of trust in connection with Case 4,000 and two other cases. The reports did not mention whether Pegasus was used.
Netanyahu, who along with Elovitch denies any wrongdoing, described those reports as "an earthquake".
Following a request from his lawyers on Monday, the Jerusalem District Court postponed the next session of his trial to allow prosecutors to answer questions about the alleged hacking.
Lead prosecutor Ronit Tirosh was quoted by the newspaper Haaretz as saying she was "confident the documents we have were gathered according to legal and legitimate orders".
Police were also cited as saying that material was not transferred by the cyber-SIGINT unit to investigators.
- BBC