The Aam Aadmi Party (AAP) had accused the BJP-led Centre of showing hostility and not giving political clearance to Kejriwal and others for attending the conference.
Islamabad has tried raking up the Kashmir issue on several international platforms following India's decision to abrogate Article 370 which accorded special status to Jammu and Kashmir.
In a recent incident, properties were vandalized including a temple in Ghotki after a school principal from the minority Hindu community was booked on charges of alleged blasphemy.
The fellowship programme at a total budget outlay of Rs 300 crore (approximately US $ 45 million) is the single-largest capacity development initiative of India in its partnership with ASEAN.
"India is resolutely opposed to any actions by other countries to change the status quo in Pakistan occupied J&K. We call on the parties concerned to cease such actions," said Kumar.
India has rejected Pakistan's allegations against Jadhav and said he was kidnapped by from Iranian port of Chabahar where he was running a business.
The incidents have sparked a furore in India, with several political leaders across parties seeking action against the perpetrators.On August 30 also, India had asked for immediate remedial action after reports of the abduction and forceful conversion of Sikh girl in Pakistan.
In a major win for India, the world court had continued its stay on the execution of the Indian national, held in a Pakistani jail on allegations of spying and found that Pakistan breached the Vienna Convention by not giving him consular access.
The mastermind of the 2008 Mumbai terror attacks was arrested in Pakistan last week on charges related to terror financing and sent to a week in judicial custody.
The Committee highlighted that Hafiz had been living freely in Pakistan and was arrested in December 2001, May 2002, October 2002, August 2006 (twice), December 2008, September 2009, January 2017.