The police have confirmed that Preethi was stabbed several times.
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.
Det Supt Dengate said police spoke with the man before he died in a "deliberate" head-on collision on the New England Highway at Willow Tree, in the Upper Hunter, about 10pm on Monday.
A colleague of Dr Reddy and Narde's, who attended the conference, said he last saw the pair chatting animatedly in the hotel lobby following the event.
Preethi severed off her romantic relationship with Narde who, it seemed, could not handle the break-up.
Baker's social media account has been active since she disappeared but police still believe something may have happened to her.
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Butts said that decision had nothing to do with SNC-Lavalin, and that her objections around SNC only ramped up around that time. If she deemed an agreement appropriate, the attorney general would then appoint another agent to negotiate it.
Reddy, a dentist from Sydney's Western Suburbs, went missing on Sunday morning.
She was last seen waiting in line at McDonald's in George Street on Sunday while the police found her vehicle parked in Strachan Lane in Kingsford on Tuesday.
Her previous rejections had failed to deter the "obsessed" Narde, police believe.
Preethi Reddy pictured at Woolloomooloo, in central Sydney.
The statement added: "We ask that everyone keep that in mind that we are grieving and we need space to do that".
"Our family will never be the same without Preethi in our lives".
The gruesome discovery of Dr Reddy's body on Tuesday came just hours after police issued a public appeal to find the 32-year-old from Penrith.
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According to the police, they spoke to Narde as part of the missing persons investigation before his death. "As a parent, the worst thing we can do is bury our kids. We've got to think about that", he said, expressing condolences to Dr Reddy's family and friends. "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.
Before her body was found, a Facebook Group called "Help find Preethi Reddy" had been set up by the family to assist the investigation.
Dr Harshwardhan Narde died in a crash on Monday night.
She is believed to have spoken with her family at about 11am on Sunday, telling them she would be having a late breakfast before heading home.
She was captured on CCTV inside McDonald's at the Strand Arcade in Sydney's CBD about 4.15am on Sunday and appeared to leave alone. The footage shows Samah Baker, 30, inside a North Sydney hotel wearing both a peach-orange coloured dress and a black and white spotted shirt with denim shorts on January 2.
Dr Reddy's current partner posted a short message along with a photo to his Facebook page. Her sister, Nithya Reddy, lodged a complaint with the Sydney police.
Dr Reddy worked at Glenbrook Dental Surgery in the Blue Mountains, around 70km west of Sydney. "We appreciate your understanding during this delicate time".
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"Words can not capture the pain we are feeling with the passing of my handsome big sister", she said.