32-year-old Parwinder Kaur was found with serious burns to her body in the front area of her house in Rouse Hill in Sydney on December 2, 2013.
She was treated at the scene by Ambulance paramedics before being airlifted to Royal North Shore Hospital where she died the next day.
Nearly four years later, police have arrested her husband Kulwinder Singh in connection with the woman’s death.
Parwinder Kaur, originally from a nondescript village in Hoshiarpur district in Punjab married Kulwinder Singh in 2005 and moved to Sydney the next year.
A coronial investigation into her death concluded that a “known person” had committed an indictable offence, but it did not name anyone. The matter was referred to the DPP.
Members of a special Strike Force Whyalla that was established in December 2013 and the Homicide Squad of the NSW Police investigated the circumstances of Parwinder’s death.
Following the investigations, police arrested 37-year-old Kulwinder Singh who police say is assisting them with their inquiries.
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Parwinder Kaur dies a day after suffering burns to her body
Superintendent Rob Critchlow, commander Hills Local Area said it was a very complex investigation.
"There were no third-party witnesses to the matter and we relied heavily on the specialist analysis of the evidence.
"It was a dogged pursuit of truth. It was a very very complex matter and involved the services of a number of specialists including members of the legal procession, fire brigade, technical and forensic specialists and cultural specialists," he said.
Police said Kulwinder was surprised to see the police this morning and exhibited some signs of stress.
They say Parwinder's family has expressed "an overwhelming sense of relief".
"They strongly felt that the death of Ms Kaur was a matter that required investigation and someone may be responsible for it. They are comforted by the support of the police," said Supt Critchlow.