By Jen Heger - Breaking Celebrity News Legal Editor

Jonah Shacknai's girlfriend, Rebecca Zahau, was buried on Saturday, and the millionaire was at the funeral, Breaking Celebrity News is exclusively reporting.

Rebecca was found dead at Jonah's Coronado, Calif. mansion, on July 13, just two days after Shacknai's son, Max, was found at the base of the stairs inside the estate, unresponsive.

Max was taken off of life support on July 18th, and his parents, Jonah and ex-wife Dina, made the brave decision to donate their son's organs. Dina Shacknai lives very close to her ex-husband's mansion.

San Diego County Sheriff spokesman Tim Curran, tells Breaking Celebrity News, "Ms. Zahau's hands were bound behind her back, and her feet were bound together," when she was found hanging from an outdoor balcony at Jonah's house. Jonah's brother, Adam, found Rebecca around 6 am on July 13 and cut her down, hoping to revive her, but it was too late.

“The investigation is still ongoing. Rebecca's toxicology report, and autopsy result are still pending. Cops are also looking very closely at the knots that were used in the chords that Rebecca was bound with,” another law enforcement source says.