US Ambassador to India [ Images ] David C Mulford on Thursday met Prime Minister Manmohan Singh [ Images ] to discuss the progress on the Indo-US nuclear deal.

Mulford had a meeting with Prime Minister at his 7 Race Course Road residence in the morning hours after Singh returned from his three-day visit to Japan [ Images ].

Later, Mulford drove down to the South Block and had a meeting with senior officials at the Prime Minister's Office (PMO).

Mulford had on Thursday met the envoys of member states of the 45-nation Nuclear Suppliers Group (NSG) in New Delhi [ Images ] and sought their support for the nuclear accord.

Mulford impressed upon the diplomats that their countries should back the deal as it was in the interest of nuclear non-proliferation system.