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A man who shot and killed himself at actress and singer Olivia Newton-John's Florida home was a contractor working on the property, police say.

The dead man was Christopher Pariseleti, 41, owner of Pariseleti Construction, police told local media.

In a statement, Newton-John and her husband said they were "in shock" over the death at her home near Palm Beach.

A worker was reportedly seen crying at the property after the shooting at noon on Monday at Jupiter Inlet Colony.

The Australian star and her husband, John Easterling, were not at home when the incident happened, said police.

Officials told ABC News the death had been classified as suicide, and there were "no suspicious circumstances".