Amandeep's mother was critically ill in hospital, he said.
"She refused to talk and eat after news of her son's death. His father, Sarbjeet, is also very upset. Amandeep was their only son," Mr Sidhu said.
"It has been very hard on all the family. Police have not yet been able to give us a reason why he died and we are hoping for those answers, that news, very soon, definitely."
Amandeep was born in the village of Agwanpur in the province of Bijnor in the north of India.
The body of the 22-year-old Indian national was found in scrub and small trees alongside the old road to the end of Kaiti Beach just over two weeks ago.
The coroner released the body to his family last Tuesday.Gisborne Herald