Spokesperson of India's foreign ministry, Vikas Swarup, said the government was trying to reach out to Indonesian authorities in the matter.
"Even as we speak, our embassy officials, consular officials are camping in Cilacap and have met Shri Gurdip Singh. We have reached out to the foreign office. We are trying to reach out to the senior leadership of Indonesia. We are also in constant touch with his wife and brother in India and keeping them informed of the current situation," said Swarup in New Delhi.
Swarup added Singh's legal representative has advised him to file for presidential clemency under the relevant law.
"Gurdip Singh is facing death sentence in a drug case in Indonesia. We are making last minute efforts to save him from execution on July 28," tweeted India's Foreign Minister Sushma Swaraj on Wednesday (July 27).
Singh's family in northern Jalandhar city of Punjab also sought his release.
"He has spent so many years in jail. I now appeal to send him back. He has not even seen (some of his) his children till date," said Singh's wife, Kulwinder Kaur.
News of the impending executions prompted condemnation from the United Nations and the European Union.
Indonesia, which is among Southeast Asia's biggest markets for narcotics, has declared a "drug emergency" and vowed no mercy for drug traffickers.
It provoked international outrage in April last year with the execution of eight drug traffickers, seven among them foreigners, following the 2013 end of a five-year temporary halt in the practice.