The Mirwaiz is understood to have discussed issues related to Kashmir during his 70-minute meeting with Basit, sources said.
Significantly, the separatist leader met the Pakistan envoy on a day when Kashmir was witnessing tension and clashes over the death of a trucker who succumbed to injuries suffered in a petrol bomb attack 10 days back.
Earlier, the Mirwaiz was supposed to visit the Pakistan High Commission in August to meeting the visiting Pakistan NSA who was scheduled to be in Delhi for talks with his counterpart Ajit Doval.