The 85-year-old doctor, who was killed allegedly by his caretaker who stole his gold chain, died of suffocation and not by strangulation, the report of his post-mortem has concluded, according to the Santacruz police.

Meanwhile, a court on Wednesday remanded Krishna Manbahadur Periyar, the 25-year-old caretaker, in police custody until May 15. Cops have recovered the stolen gold chain.