Prime Minister Narendra Modi and Home Minister Amit Shah used the Pegasus spyware against India and its institutions, and "the only word for this is treason", Congress leader Rahul Gandhi alleged on Friday.

Gandhi demanded a Supreme Court-monitored probe into the matter. Addressing reporters at Vijay Chowk, he also demanded the resignation of the home minister.

He said all his phones have been tapped and his friends were informed by intelligence people that this is being done.

"I am not a 'potential target'. My phone is tapped, it is clearly tapped. Not only this phone but all my phones are also tapped," he told reporters, as reported by ndtv.com, while the Opposition party members shouted slogans against the Pegasus snooping controversy.

"Pegasus is classified by the Israeli state as a weapon and that weapon is supposed to be used against terrorists. The prime minister and the home minister have used this weapon against the Indian state and our institutions. They have used it politically, they have used it in Karnataka..," he told reporters.

"The only word for this is treason, he said. The matter has to be investigated," the former Congress president said.

"A judicial inquiry monitored by the Supreme Court should be conducted and the home minister must resign," he told reporters.

Gandhi claimed he had been told by security personnel that his conversations were monitored. "I get phone calls from IB (Intelligence Bureau) people who tap my phone. They say your phone is being tapped. My security people tell me they have to debrief what I say. I am in no pretensions that I am tapped," he said, according to NDTV.

"I am not afraid. I don't get intimidated. In this country, if you are corrupt and a thief, you will be afraid. If you are neither of those, you have nothing to be afraid of," the senior leader added.

"The main question is that has the government not paid for this? Can you buy Pegasus? Can I buy Pegasus? Only a government can buy Pegasus. The Prime Minister's signature, or at least the Home Minister's signature, is needed for it. The military of a nation cannot buy Pegasus,"

Reacting to his remarks, the BJP asked Gandhi to submit his phone for investigation if he believes it was tapped and asserted that no one's phone has been tapped illegally by the Modi government.

BJP spokesperson Rajyavardhan Rathore told reporters that the Congress is determined to stall Parliament for one reason or another after being rejected twice by people in Lok Sabha polls of 2014 and 2019.

Rathore said everybody has the right to what they want in a democracy.

"Gandhi should submit his phone to probe agency, and investigation will take place as per the Indian Penal Code (IPC)," he said.

"The Congress cannot accept the country's development and has been stalling Parliament's functioning often one one pretext or another," he alleged.