India on Monday said the trial of its national Kulbhushan Jadhav by a Pakistani military court "hopelessly failed" to satisfy even the minimum standards of due process and requested the International Court of Justice to declare it "unlawful".

India's plea came as the top UN court began a four-day public hearing in the case of Jadhav, 48, who was sentenced to death by a Pakistani military court on charges of espionage. India, during the first day of the hearing, based its case on two broad issues -- breach of Vienna Convention on consular access and the process of resolution.