Nick Reiner ordered into strict, involuntary mental health conservatorship years before he allegedly killed mom and dad Rob

Rob Reiner’s troubled son Nick was under a strict, court-ordered mental health conservatorship — that is reserved only for the sickest adults — before he allegedly stabbed his mom and director dad to death in their Brentwood home, according to a new report.

A judge placed the young Reiner into a yearlong conservatorship that involved him receiving involuntary psychiatric treatment in 2020.

The California legal restraint — called Lanterman-Petris-Short (LPS) — is only applied to people deemed to have a “grave disability,” meaning they are unable to provide for their own food, clothing, or shelter due to a mental health disorder.

Nick Reiner was placed into a yearlong conservatorship that involved him receiving involuntary psychiatric treatment in 2020, according to a new report. Getty Images for Wynn Las Vegas

Nick allegedly stabbed his mom and director dad to death in their Brentwood home last month. / SplashNews.com

“You have to be pretty severe to be placed on a mental health conservatorship in California,” Lee Blumen, a lawyer with expertise on the matter, told the New York Times.

“Of all the people who come into this system, a very small group of people actually get placed on conservatorship.”

An LPS conservatorship is specifically designed for involuntary psychiatric treatment.

It allows a guardian to make medical and medication decisions for patients — against, their will if necessary.

The arrangement for Reiner expired in 2021, the Times reported.