The corporate watchdog's lead investigator into Melissa Caddick's alleged Ponzi scheme has told an inquest she does not feel responsible for the accused fraudster's death.
Ms Caddick vanished in November 2020, hours after the Australian Investment and Securities Commission (ASIC) and the Australian Federal Police (AFP) raided her Dover Heights home, in Sydney's eastern suburbs.
The inquest has heard Ms Caddick is accused of defrauding investors of between $20 million and $30 million.
An inquest into the 49-year-old's suspected death on Monday heard evidence from ASIC investigator Isabella Allen, who described the conduct of those involved in the 12-hour search as "professional".
The court has previously heard Ms Caddick's husband, Anthony Koletti, and her mother have both raised concerns about possible mistreatment during the raid.
Under questioning from her own lawyer, John Sutton, Ms Allen was asked to respond to complaints of negligence or cruelty.
"That's incorrect," she replied.
The inquest was told Ms Caddick's brother, Adam Grimley, asked Ms Allen in June 2021 how it felt "being responsible for Melissa's death".
"Do you feel responsible for Melissa's death?" Mr Sutton asked.
"No, I was doing my job," Ms Allen replied.
Ms Allen also rejected allegations she had purposely spoken to enemies who had sworn revenge on Ms Caddick.
The court heard ASIC formally commenced an investigation into the alleged fraud on September 8, 2020, following preliminary inquiries that were made as a result of two complaints.
Ms Allen said one of Ms Caddick's investors, Dominique Ogilvie, provided information after she learned Ms Caddick was purportedly using someone else's financial services licence.
She said Ms Ogilvie, who subsequently withdrew her funds, took part in a phone interview on September 14 and was told she could still speak freely to Ms Caddick but was not to disclose the contents of any of her conversations with ASIC.
The inquest has heard that around the same time, Ms Caddick texted an employee asking about a document shredding company, Shred-X, and booked its services.
Ms Allen said they were "aware of the Shred-X contact" and aware that something may have been shredded.
But ASIC determined the Shred-X contact was not because Ms Caddick had been "tipped off", she told the inquest.
The regulator learned of the shredding issue after it obtained "telecommunication data".
AFP Constable Amelia Griffen, the executing officer of the search, said Ms Caddick was told she was permitted to roam freely around the Dover Heights mansion, get food or drink and go to the bathroom during the raid.
She agreed with the suggestion there were no signs of distress or frustration exhibited by Ms Caddick or Mr Koletti.
The witness further agreed there were no tears and the feeling was one of "almost professional calmness or resignation".
The court has heard Mr Koletti's concerns have most prominently been expressed through his "musical endeavours".
The inquest, before Deputy State Coroner Elizabeth Ryan, continues and Mr Koletti is expected to be a witness this week.
