Law enforcement sources tell the 21-year-old man drowned in the pool. His body was discovered on Sunday morning (19Jul15).

Reports suggest he was a guest at a party at the house, allegedly thrown by an assistant.

The Ghost star was not at the bash as she is currently out of town, and local law enforcement sources insist none of the actress' daughters were there.

A police spokesman tells the Los Angeles Times, "From what I understand, it was a staff member (who drowned)."

The drowning victim has not been identified.