Addressing a DRDO event here, Singh asked how can India talk to Pakistan when it keeps trying to destabilise India using terror.
Recently, France and Sweden had also advised Pakistan to engage in talks with India.
Authorities have previously denied or played down reports of any violence and stressed that most of the Muslim-majority Kashmir Valley has been peaceful.
Pakistan on Thursday observed 'Black Day' on the occasion of India's Independence Day to protest New Delhi's move to revoke the special status to Jammu and Kashmir.
Various Pakistani institutions were part of the meeting, which would lay out a future course of action over the Kashmir dispute.
He said there were 11 UNSC resolutions reiterating the Kashmiris' "right to self-determination".
Pakistan's Maleeha Lodhi says UNSC meeting nullifies India's claim of Jammu and Kashmir being internal matter
The UNSC meeting was held on Friday after China's insistence to hold a discussion on the current situation of affairs in Jammu and Kashmir following India's decision to revoke its special status.
'Any discussion on Kashmir will only be with Pakistan, bilaterally': Jaishankar on Trump's 'mediation' offer
ASEAN summit 2019 was the first official meeting between S Jaishankar and Mike Pompeo after US President Donald Trump's controversial comments over the Kashmir issue.
India has denied Trump's claim and said Modi made no such request and Kashmir is a bilateral issue between India and Pakistan.
Singh made it clear that the priority of the government is to ensure connectivity of border and rural areas of the country speedily.
India has said that it hopes the new government of Prime Minister Imran Khan would work constructively to build the region and free it from the scourge of terrorism.