Wang, who holds the rank of state councillor, arrived in Delhi on Thursday evening from Kabul on an unannounced visit.
Ramesh said his remarks were based on a news article and added that 'some independent verification of the facts may have been in order'.
This is Ajit Doval's second visit to the state after the Centre abrogated provisions of Article 370 on August 5.
It was not immediately known how long the NSA would stay in the valley.
National Security Adviser Ajit Doval affirmed that restrictions in Kashmir are aimed at preventing Pakistan from creating more mischief through proxies and terrorists.
Restrictions were imposed on communication links and movement of people in Jammu and Kashmir on August 5.
During his stay, the NSA took a round of Shopian, a district worst hit by terrorism, and met locals and security personnel.
An unprecedented security cover and several restrictions are in place in Kashmir. All modes of communication have been snapped in the Valley.
The wiping out of the Burhan Brigade was planned by none other than National Security Advisor Ajit Doval.
What transpired between them was not immediately known or officially communicated, but sources in Home Ministry said that Singh took stock of the security situation in Kashmir.