A senior official in the Indian High Commission in Dhaka had travelled to Jessore in southwestern Bangladesh last month to meet Sonu on the directive of External Affairs Minister Sushma Swaraj.
Sonu is currently staying in a child rehabilitation centre in Jessore.
"An officer from Indian embassy in Dhaka was sent to Jessore to that child rehabilitation centre where Sonu is kept. Sonu is in good health. He was in good spirits. Now basically we have to find what is the best way and the quickest way of getting him back," External Affairs Ministry Spokesperson Vikas Swarup said.
At the same time, he said government in close coordination with the Bangladeshi authorities to find out what is the best way to get Sonu back.
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Sonu had reportedly gone missing from Delhi in 2010 and a man from Jessore recently contacted his family here and gave details about the whereabouts of the boy.
The details of how the boy had gone missing are not yet known.
Replying to a question on whether India will be given membership of Shanghai Cooperation Organisation (SCO), Swarup said it was "on track".
The SCO, in its annual meet in Ufa in Russia last year had decided to include India as a full member.
India has an Observer status in the grouping for the past 10 years. It is likely to become full member of SCO at its upcoming annual summit in Tashkent from June 23-24.