The body of Kulwant Singh Grewal, from Southall in west London, was found near Ludhiana on May 30.
The grandfather of two had gone to India to settle a property dispute in the Punjab courts and was last seen alive on May 16.
His family in the UK became concerned after he missed a court appearance and alerted the Indian police.
"My mother phoned me on my mobile and said to me, 'They've just found his body'. I just cried to myself," his son, Iqbal Grewal, told the BBC.
His father, a commercial landlord who emigrated to the UK from Singapore in 1959, had lived and worked in London for 54 years.
However, he carried on holding a Singapore passport and was not a British citizen.
The UK's Foreign and Commonwealth Office (FCO) said it could not help as Grewal was not a British national but it had given the family a list of approved lawyers that could take up the case.
