When she did not return, her family contacted the police who located her body in her vehicle at 9.30 p.m. on Tuesday. Police have stated that Reddy and her ex-partner had stayed at a hotel in Sydney's CBD on Market Street Sunday. The man who was suspected of killing the woman was her Indian-origin ex-boyfriend and dentist Harsh Narde.
The gruesome discovery came just hours after police issued a public appeal to find the 32-year-old from Penrith.
The police reported that they had spoken to Narde before his death as part of a preliminary investigation, claiming that the investigation had still been in its initial stages.
Police said her failure to contact family for such a long time was out of character and they had serious concerns for her welfare.
Three days later, the Australian woman's body was found stuffed in a suitcase in an abandoned vehicle.
She last spoke with her family about 11am later that morning, saying she planned to head home after having a late breakfast, police said.
Initial investigation revealed that Preethi Reddy attended a restaurant in George Street and walked alone towards the Market Street later.
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The ex-boyfriend of Sydney dentist Preethi Reddy didn't have a violent history that suggested he was capable of committing the obsessive attack which killed the "bright" young woman.
CCTV footage shows Ms Reddy at a McDonald's inside the Strand Arcade in Sydney's CBD about 2.15am on Sunday.
Her ex-boyfriend has also died in a road accident that appeared deliberate, they said. "It takes a lot of effort to be a dentist and she achieved it. the family's so proud that they had a daughter like that", Anand told reporters.
Family friend Navniit Anand said Reddy was "a lovely human being" and her family was "shattered".
Her remains were found last night in Strachan Lane, just a few hundred metres from Anzac Parade and about 700m from the University of New South Wales.
Police had previously disseminated images of Dr Reddy and her grey Volkswagen Golf and Sydney City Police Area Command established Strike Force Carlwood in an effort to locate her.
The man suspected of murdering the Sydney dentist Preethi Reddy, whose body was found stuffed in a suitcase in her vehicle parked in an eastern Sydney street, New South Wales, is another Indian-origin dentist and her ex-boyfriend Harsh Narde, police said.