Indian Deputy High Commissioner JP Singh is accompanying them. Officials also said Jadhav's family would not interact with the media.
The meeting was scheduled for 30 minutes, but it was extended for 10 more minutes on the request of Jadhav and his family members, the spokesperson said. Before the meeting, the security check of the family was performed.
He said Pakistan has concrete evidences against Kulbhushan Jadhav of his involvement in subversive activities in Balochistan and Karachi. "This was conveyed to Indian High Commission categorically", he said. It was not known where he had been kept before being transported to the foreign ministry.
Foreign Minister Khawaja Asif, during his earlier appearance on Geo News" programme "Naya Pakistan', had said that India was given consular access to the convicted Jadhav, describing it as a "concession". TV footage showed a convoy of around seven vehicles escorting Jadhav's family in the city.
Officials said all arrangements are in place for the meeting between Jadhav and his wife and mother, and sharpshooters were deployed at the sprawling FO building ahead of the meeting.
Roads leading to the Constitution Avenue, on which MOFA is located, have been closed for traffic. After a brief stay, the mother and wife went to Foreign Office amid tight security.
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His attack on the BJP came a day after he accused the ruling dispensation of having its structure and foundation based on lies. Rahul, who is now on a three-day visit to Gujarat, began by offering prayers at Somnath Temple on Saturday.
Pakistan has announced it would issue photos and a video of the meeting and also allow the family to interact with media, if India agrees.
Following this, India moved the International Court of Justice (ICJ) in May.
After the meet, Jadhav's mother Avanti Jadhav thanked Pakistan's foreign office for arranging the meeting with her son.
However, New Delhi has been maintaining that Jadhav, a retired Navy officer, was kidnapped from Iran where he had some business interest.
The ICJ suspended the execution, pending final judgment by the court.