By Jen Heger - Breaking Celebrity News Legal Editor

Dina Shacknai's twin sister, Nina Romano was at the Coronado mansion in the hours leading up to Rebecca Zahau's death, Breaking Celebrity News is 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. Dina Shacknai was Max’s mom and was married to Jonah, but divorced several years ago.

Rebecca's family has always maintained that she did not kill herself and have been campaigning to have the investigation into her death reopened.

As Breaking Celebrity News previously reported, The Dr. Phil Show will be airing a special next week over two days about Rebecca Zahau's mystery death -- her body was exhumed and a second autopsy was performed several weeks ago.

The Zahau family attorney, Anne Bremner said during the taping of The Dr. Phil Show, that there was a very strong chance Dina Shacknai was at Jonah's house, shortly before Rebecca killed herself. Law enforcement finally gave Bremner copies of the their files, which included an eyewitness stating that someone who matched Dina's description was at her ex-hubby's house.

However, it was actually Dina's fraternal twin sister, Nina who was at the house.

"There is irrefutable evidence including multiple eyewitnesses that Dina Shacknai was at the hospital with Max when this witness purported to see her at the Spreckles mansion," a source familiar with the investigation told Breaking Celebrity News. Max was on life support at this time, and she hardly left his side.

Nina Romano told the CBS affiliate in San Diego earlier this week, that she went to the house to get answers about Max's accident. She was staying at her sister's house, which was in close pr