One of the two men suspected of carrying out a mass shooting at Bondi Beach was originally from southern India but had limited contact with his family there, police sources have said.
Sajid Akram, who died at the scene in Sydney on Sunday, was originally from the city of Hyderabad, a police official from the Indian state of Telangana said.
He had travelled to India just six times since moving to Australia in 1998 and his family expressed no knowledge of his radical mindset or activities, the official added.
Sajid, 50, and his 24-year-old son Naveed are suspected of killing 15 people and injuring dozens more at an event celebrating the Jewish festival of Hanukkah on Sunday.
Hyderabad, where Sajid Akram's family is based, is the capital of Telangana state in southern India.
The Telangana police official told BBC Telugu Sajid had visited India on six occasions after migrating to Australia, primarily for family-related reasons such as property matters and visits to his elderly parents.
It is understood that he did not travel to India even at the time of his father's demise, the official said.
The factors that led to the radicalisation of Sajid Akram and his son, Naveed appear to have no connection with India or any local influence in Telangana.
The official also said Sajid Akram had no criminal record in India and had completed a degree before moving to Australia in search of employment.
Police are currently investigating why the father and son travelled to the Philippines in the weeks leading up to the attack, with reports suggesting possible military-style training.
The Australian government has noted that Naveed Akram was previously investigated due to links with a Sydney-based IS terrorism cell, though any threat was deemed non-existent at that time.
