SON ARRESTED FOR MURDER of movie director Rob Reiner and wife

Los Angeles police charged the son of Hollywood director Rob Reiner with murder on Monday after the suspect's parents were found stabbed in a brutal double killing that shocked movie fans around the world.

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Nick Reiner, 32, was detained hours after the bodies of the 78-year-old actor-director and his wife, 70-year-old Michele Singer Reiner, were discovered in the upscale Brentwood neighborhood of Los Angeles on Sunday, with multiple reports that they had been stabbed to death or had their throats slit.

Los Angeles police chief Jim McDonnell told reporters the younger Reiner was arrested a few hours after the alarm was raised.

"He was subsequently booked for murder and is being held," McDonnell said.

Nick Reiner, who has a history of substance abuse stretching back to his teenage years, had argued with his parents at a glitzy Hollywood party on Saturday evening, media reported.

Entertainment outlet TMZ said the bodies had been found on Sunday afternoon by the couple's daughter, who told police another family member had killed them.

As tributes poured in from entertainers and politicians, Donald Trump unleashed an extraordinary broadside, suggesting that Reiner brought on his own murder by criticizing the US president.

Trump claimed the Reiners had died "reportedly due to the anger he caused others through his massive, unyielding, and incurable affliction with a mind crippling disease known as TRUMP DERANGEMENT SYNDROME."