NEW DELHIinfo-icon: Indiainfo-icon's parliament erupted in protests on Tuesday as opposition lawmakers accused Prime Minister Narendra Modi's government of using military-grade spyware to monitor political opponents, journalists and activists.

The session was disrupted repeatedly as opposition lawmakers shouted slogans against Modi's government and demanded an investigation into how the spyware, known as Pegasus, was used in India.

This is a national security threat, an opposition Congress party official, Kapil Sibal, said at a news conference.

The protests came after an investigation by a global mediainfo-icon consortium was published on Sunday. Based on leaked targeting data, the findings provided evidence that the spyware from Israelinfo-icon-based NSO Group, the worlds most infamous hacker-for-hire company, was used to allegedly infiltrate devices belonging to a range of targets, including journalists, activists and political opponents in 50 countries.

In India, the list of potential surveillance targets included senior Congress party leader Rahul Gandhi, at least 40 journalists, a veteran election strategist critical of Modi and a top virologist, according to the investigation.

Newly appointed information technologyinfo-icon minister Ashwani Vaishnaw dismissed the allegations on Monday, calling them highly sensational, over the top, and an attempt to malign the Indian democracy.

Minutes after his statement in parliament, India's independent The Wire website -- part of the media consortium -- revealed that his name also appeared on the list as a potential surveillance target in 2017. He was not a member of Modi's Bharatiya Janata Party at that time.

NSO Group has said it only sells its spyware to vetted government agenciesinfo-icon for use against terrorists and major criminals. The Indian government has so far dodged questions over whether it is a client of the group.

A list of more than 50,000 cellphone numbers was obtained by the Parisinfo-icon-based journalism nonprofit Forbidden Stories and the human rightsinfo-icon group Amnesty Internationalinfo-icon, which was then shared with 16 news organisations.

Journalists were able to identify more than 1,000 individuals in 50 countries who were allegedly selected by NSO clients for potential surveillance, including 300 verified Indian numbers, The Wire reported.

The source of the leak and how it was authenticated was not disclosed. A phone numbers presence in the data does not necessarily mean an attempt was made to hack a device, Amnesty International said.

In India, the investigation fueled a slew of angry reactions from officials.

Home Minister Amit Shah called the investigation an attempt to derail India's development trajectory through their conspiracies and said it was timed to cause disruptions in parliament.

The former IT minister, Ravi Shankar Prasad, said there was not a shred of evidence linking Indian government or the BJP to the allegations. Prasad called it an international plot to defame India.

Rights groups say the findings bolster accusations that not just autocratic regimes but also democratic governments, including India, have used the spyware for political ends.