San Diego police are pursuing surveillance footage from the hospital where Jonah Shacknai kept vigil while his 6-year old son, Max, fought for his life.

On July 11, Max Shacknai, son of the millionaire Medicis Pharmaceuticals CEO, sustained fatal injuries after falling down the stairs in Jonah Shacknai's Coronado mansion, known as Spreckles Mansion - the same home where his father's 32-year old girlfriend Rebecca Nalepa Zahau was found dead the following Wednesday, hanging from a rope dangling over a courtyard.

Max was in Rebecca's care when he was injured, and died six days later as a result of the accident.

Zahau's body was found by Jonah's brother Adam Shacknai, who came to Coronado to support his brother after Max's injury.  Jonah was reportedly at his son's bedside along with Max's mother (and Shacknai's ex-wife) Dina Romano when Rebecca's body was found, and it is uncertain whether he was at the mansion between the time of Max's injuries and Zahou's death two days later.

The San Diego Sheriff's Department will be obtaining a search warrant to review the footage, a law enforcement source told Radar Online. Investigators want to confirm details of what Jonah, Adam, and Dina [Jonah's second wife, and Max's mother], have revealed to them. Jonah maintains that he was at the hospital when Rebecca's body was found. This is a very fluid investigation.

Jonah Shacknai has not yet commented publicly on the death of his girlfriend, and made a joint statement with his ex-wife after their son passed away.

It read, in part:

With great sadness, Dina and I convey the tragic passing of our beloved son, Max (affectionately known as Maxie).  Despite heroic efforts on the part of paramedics and hospital staff, he was unable to recover from the injuries suffered early last week.  His loving, kind and vibrant spirit will forever be in our hearts and those whom he touched every day. The loss to our families, Max's many friends of all ages and teammates, and the community is immeasurable.

We appreciate your respecting the privacy of our families during this time of grieving for Max.

Dina Romano also lives in Coronado, reportedly a very short distance from Spreckels Mansion.

Rebecca Zahau's dead body was found nude, bound, and hanging from the mansion's balcony on Wednesday, July 13.

Adam Shacknai told police that he cut Rebecca down after finding her, believing her life could still be saved. Both her ankles and wrists were bound.

When parademics arrived they found her in distress, but still alive. She died shortly afterwards.

This is a very bizarre death, there's no doubt about it, San Diego Sheriff's Capt. Tim Curran told reporters.

There are some very unique ways people can take their own lives, Curran added. If it was determined to be a suicide, people will do some very bizarre things.

Coronado police spokesperson Lea Corbin told The Arizona Republic that there does not appear to be any connection between Max Shaknai's injury and the bizarre death of Jonah Shacknai's girlfriend.

But the timing of the incidents, and the fact the Zahau's wrists and ankles were bound, have caused some to speculate that foul play may have been involved.

Rick Carlson, a retired San Diego detective, 'suicide expert' and author of a collection of suicide notes titled I'm in the Tub, Gone,is one such person.

I think the whole thing is very suspicious, Carlson told Radar Online. it just does not seem right to me.

I investigated hundreds of suicides in my career but never anything like this one - it would be very unusual for a woman to take her life in such a spectacular way naked.

Usually when people commit suicide they go to a very quiet place because they are so sad - the detectives examining the case will be looking at the type of knot that was used to bind her.

Zahau's sister Mary Zahau-Loehner does not believe Rebecca took her own life.

Zahau-Loehner spoke to ABC News about Rebecca's state of mind before the gruesome discovery, saying that when the sisters spoke on Tuesday night, things with Rebecca did not seem out of the ordinary.

She was normal, fine, just getting ready to go to bed, Zahau-Loehner said. Rebecca was a beautiful, vibrant, loving and kind person and she would never do this to herself, she later added.

A San Diego kennel owner who spoke to Rebecca Zahau the day after Max's accident said the woman was shaken by the recent events at her home.

Police have sealed all evidence related to the case, including search warrants and Rebecca Zahau's autopsy report.