New Delhi: Escalating the attack on Mani Shankar Aiyar over his controversial remarks in Pakistani talk show, BJP called it "treason" and demanded an apology from Congress chief Sonia Gandhi, Indian media reported on Thursday.

Union ministers M Venkaiah Naidu and Prakash Javadekar, who hit out at former external affairs minister Salman Khurshid for criticising the NDA government for its tough stand against Pakistan, also said Congress should take strong action against the two for their "seditious" and "anti-national" remarks.

"The comments made by Aiyar and Khurshid are highly objectionable and anti-national. Going to a foreign country and calling upon people to overthrow a democratically elected PM is nothing but sedition."

"Congress party should condemn these remarks and take strongest possible action against these two people. They are not ordinary people to be brushed aside. They were ex-ministers and spokesmen of the Congress party. This shows the level of frustration of the party and its leaders," Naidu told reporters on the sidelines of a function, terming the remarks by the two Congressmen "disgusting" for any patriotic Indian.

"Aiyar's attempt is clearly aimed at destabilizing the democratically elected government led by PM Modi. To say so on foreign soil is even worse and amounts to clear act of treason," he said, in a statement later.

Javadekar wondered if the opposition party approved of their remarks and demanded Gandhi's apology. "Does Congress approve of Aiyar's remarks? If the two leaders are not forthcoming, then Congress president should apologise. Being chief of the party she (Sonia Gandhi) should take responsibility and apologise," he told reporters at party headquarters.

"The way Khurshid and Aiyar are singing paeans of Pakistan and denigrating the Prime Minister's Office is unacceptable. They are playing with sentiments of people who are seeing their action as a betrayal of the country. They are free to disagree with us in India but not on foreign soil," he said.

Aiyar sparked a controversy by reportedly saying, during a panel discussion on a Pakistani news channel, that Prime Minister Narendra Modi needs to be removed if talks between the two nations have to resume. His comments have evoked sharp reactions. Khurshid criticised the government for adopting a tough stand on Pakistan.

Countering Congress' criticism of its handling of Kashmir and Pakistan, Naidu asked, "If it is so simple for Congress, they should explain why in the last 50 years they have not resolved Kashmir through peace dialogue. Why they have not successfully stopped Pakistan from supporting terrorist organisations. Congress must exhibit its sincerity by taking action against these two people."

Javadekar accused Congress of practicing the "worst" kind of diplomacy, pointing to the Indo-Pakistan joint statement at Sharm-el Sheikh during the UPA tenure.

He termed as "highly communal" comments of Congress leader Shakeel Ahmed where he had allegedly linked action against Chhota Rajan and Anup Chetia to their religion. "Congress looks for religion in every possible action, even in crimes. This is their policy," he said.

"Senior Congress leaders defending such leadership in Pakistan is a clear evidence of their anti-national philosophy for which they deserve to be strongly punished by their party. Congress leadership cannot keep mum on such disturbing tendencies within their party," Naidu said.