Dina Shacknai, the mother of six-year-old Max Shacknai who tragically died last summer at his father's Coronado mansion, is suing the San Diego Medical Examiner's office to obtain his autopsy photos because she doesn't believe that he died by falling and hitting his head, RadarOnline.com is exclusively reporting.

As we previously reported, Rebecca Zahau, the girlfriend of Dina Shacknai's ex-husband Jonah Shacknai, killed herself just days after Max's fatal accident.

The Dr. Phil Show about Rebecca Zahau's mystery death will be airing next week over two days, RadarOnline.com is exclusively reporting.

Rebecca's tragic death was ruled a suicide after her naked body was found hanged with her hands and feet bound, at her billionaire boyfriend Jonah Shacknai's historic Spreckles mansion in San Diego.

The death occurred just days after Jonah’s six-year-old son Max had an accident in the home, while under Rebecca’s care, that turned out to be fatal.

The historic  mansion where Rebecca Zahau’s body was found hanged this summer has been sold by the billionaire owner Jonah Shacknai, who was her boyfriend at the time of her death.

Shacknai’s six-year-old son Max had an accident in the home on July 11, and two days later Zahau, 32, who had been taking care of the young boy at the time of his accident, was found hanging naked from a balcony of the historic mansion. 

Max tragically passed away a few days later and the San Diego Police Department and Coroner’s office controversially ruled Rebecca’s death a suicide.

Rebecca Zahau's body is going to be exhumed and Dr. Phil is paying for the procedure, RadarOnline.com has exclusively learned.

Rebecca's tragic death was ruled a suicide after her body was found hanged with her hands and feet bound, at her billionaire boyfriend Jonah Shacknai's historic Spreckles mansion in San Diego.

The death occurred just days after Jonah’s six-year-old son Max had an accident in the home, while under Rebecca’s care, that turned out to be fatal.

As RadarOnline.com has exclusively reported, Rebecca's family does not believe she committed suicide and have insisted that she was murdered,
and now Dr. Phil McGraw is going to have her body exhumed from her grave in Missouri and retested for any more evidence of foul play.

As the mystery surrounding the death of Rebecca Zahau grows, another unexplained footprint has surfaced, in the bedroom where she was moments before she allegedly hanged herself RadarOnline.com has exclusively learned.

Dr. Maurice Godwin, a forensic expert hired by the Zahau family, told RadarOnline.com that a shoe impression on the carpet in the bedroom is unknown and may not have come from police but from someone else not yet identified.

PHOTOS: Celebs Involved In Murder

"The toe is actually underneath the foot of the bed," Dr. Godwin told RadarOnline.com about the shoe print in the photo given to RadarOnline.com that was part of the police evidence.  "This could suggest that it is likely not from the police."

Rebecca's naked body was found hanging from the balcony at her boyfriend Jonah Shackani's historic Spreckels Mansion in Coronado, CA in July, two days after his son, Max, 6 was found unconscious at the base of the stairs. Max later died from his injuries.

PHOTOS: Celebrities Who Died In Bizarre Circumstances

Police have said that Rebecca hanged herself after receiving a distressing call from Shacknai telling her that his son's health had taken a turn for the worse.  They have said she was alone in the home, but her family disputes this assertion and have said they think she was murdered.

Forensic Expert Reveals Another Set Of Unknown Footprints On Balcony In Zahau Case

According to Dr. Godwin's examination there was an unknown shoe impression in the bedroom where the police have said Rebecca was before she hanged herself by tying a rope to the leg of the bed frame, which would raise a flag about someone else being in the room with Rebecca.

As RadarOnline.com previously reported, the renowned expert had harsh criticism for the San Diego Sheriff's Department's handling of Rebecca's investigation, and her family has repeatedly called for the authorities to re-open the case into her death.

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New Witness In Mansion Deaths Says They Heard Woman 'Scream For Help' -- Hours Before Cops Claim Rebecca Zahau Committed Suicide

California AG Could Still Probe Deaths Of Jonah Shacknai's Son & Girlfriend

Jonah Shacknai Request To Re-Examine Rebecca Zahau Case Refused

California Attorney General Kamala Harris has formally denied Jonah Shacknai's request for the office to re-examine the deaths of his girlfriend, Rebecca Zahau, and son, Max, RadarOnline.com is exclusively reporting.

Rebecca's nude body was found hanging from a balcony at Jonah's Coronado mansion, two days after Max was found unconscious at the base of the stairs. Cops ruled Rebecca's death a suicide, something her family vehemently disagrees with.

EXCLUSIVE DOCUMENT: Read Attorney General’s letter Refusing To Re-Examine Rebecca Zahau Case

The polygrapher that gave Adam Shacknai his lie detector test, tells RadarOnline.com exclusively, that the results of the test were inconclusive, and that he recommended to the San Diego Sheriff's Department that another test be given.

Adam's billionaire brother Jonah Shacknai was dating Rebecca Zahau, who was found nude, and hanging from a balcony at the Medicis' CEO's mansion in Coronado, a wealthy suburb of San Diego.

Cops contend that Rebecca killed herself. Rebecca's family vehemently disagrees with the San Diego Sheriff's Department's conclusion that she committed suicide and are pushing for the investigation to be reopened.

The anguished family of Rebecca Zahau has formally asked the California Attorney General to launch a full and independent investigation of the woman’s mysterious hanging, RadarOnline.com has exclusively learned.

In an email sent to Attorney General Kamala D. Harris on Wednesday, the family’s high-profile lawyer, Anne Bremner, said the Department should open a new probe because she had obtained "compelling evidence to be investigated" and "new critical witnesses to be interviewed."

“I will be respectfully submitting to you a formal and detailed response to Mr. Shacknai’s letter (which was not copied to me nor to my clients),” Bremner wrote.

Adam Shacknai needs to be given another lie detector test in connection with the death case involving Rebecca Zahau, according to famed polygraph expert Jack Tramarco, RadarOnline.come is exclusively reporting.

Adam's billionaire brother Jonah Shacknai was dating Rebecca Zahau, who was found nude, and hanging from a balcony at the Medicis' CEO's mansion in Coronado, a wealthy suburb of San Diego. Cops contend that Rebecca killed herself.

Rebecca's family vehemently disagrees with the San Diego Sheriff's Department's conclusion that she committed suicide and are pushing for the investigation to be reopened.

The investigation into the deaths of Rebecca Zahau and Max Shacknai has taken some incredible twists and turns over the past six weeks and now grieving boyfriend and father, Jonah Shacknai, has sent a request to the California attorney general asking that the inquiry be re-examined in both cases, RadarOnline.com has learned.

In a letter sent by Shacknai to the attorney general on Monday, the billionaire wrote that further investigation would be beneficial in, "bringing some clarity, dignity, and ultimately closure to the devastating deaths," reported ABCNews.com.

"The circumstances of Rebecca's suicide were so unusual and upsetting that it was difficult to accept the hard facts that were presented," he went on to write.