Spreckels Mansion Boy Max Shacknai, 6, Dies From Injuries

July 18, 2011— -- Millionaire Jonah Shacknai, already grieving for his girlfriend who was found hanged in his California mansion last week, has said that his young son has died from injuries suffered in the mansion.

Max Shacknai, 6, was injured at the historic Spreckels mansion in Coronado, Calif., last Monday. He was rushed to the hospital with serious injuries and his death was announced Sunday.

Two days after Max was injured, Jonah Shacknai's girlfriend Rebecca Zahau was found dead, hanging naked from a balcony at the mansion.

Police are investigating whether Zahau's death was a murder or a suicide. During a press conference last week San Diego Sheriff spokesman Tim Curran said the crime scene appeared "suspicious."

At the time they did not believe there was a connection between Zahau's death and Max's injuries.

Jonah Shacknai sent out a statement Sunday, asking for privacy as he and his ex-wife Dina, Max's mother, grieve for their son affectionately known as Maxie.

Second Spreckels Mansion Death

"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," he wrote.

A private memorial service is planned, according to the statement, and it is asked that any memorial contributions be made to Whispering Hope Ranch Foundation. The statement concludes: "On behalf of Dina, myself and our families, please know of our appreciation for the tremendous outpouring of support provided during this very difficult time."

On July 11, police received a call from a woman at the mansion who they would not identify, requesting medical aid for Max.

The child "had fallen from stairs and was not breathing and did not have a pulse," Coronado Police Chief Louis Scanlon said last Thursday.

Paramedics performed CPR and the boy was hospitalized.

"At this time, we have no information that would lead us to believe this is anything other than a tragic accident with the child," Scanlon said.

In between the boy's accident and the discovery of Zahau's body, neighbors told ABC News affiliate KGTV a loud party took place at the mansion on Tuesday night. However, police said last Thursday they were not aware of any parties.

Two days later, police received a call from Shacknai's brother Adam Schacknai that he found Zahau hanging from the balcony. When police arrived at the mansion they found the 32-year-old's body on the lawn in the backyard. Shacknai told them he had cut her down.

When Zahau's family learned she had been found dead last Wednesday, they told ABC News they were shocked and devastated.

Zahau's sister Mary Zahau-Loehner, 33, told ABC News last week that she spoke with her sister around midnight Tuesday, and everything seemed to be OK.

"She was normal, fine, just getting ready to go to bed," said Zahau-Loehner, who lives in Saint Joseph, Mo.

Police announced last week that an autopsy has been completed and they are still awaiting results from the forensics investigation and lab work.

Two Mysterious Deaths at Spreckels Mansion

Since 2007, the mansion has belonged Jonah Shacknai, the 54-year-old multimillionaire founder and CEO of Medicis Pharmaceutical Corporation in Scottsdale, Ariz., a company that makes treatments for acne and facial wrinkles.

He is grief-stricken, Zahau-Loehner told ABC News.

"They were together for two or three years and I think they were happy," she said. "She goes to that Coronado house with his kids, they go there in the summertime."

Coronado, a community of about 24,000 on a peninsula in San Diego Bay, had one murder last year according to the Associated Press.

Zahau, who had previously went by the last name Nalepa, reinstated her maiden name, Zahau, in May, documents from the Superior Court of Arizona show, after divorcing her husband Neil Nalepa.