Rob & Michele Reiner’s Son Nick Was Missing for Hours Following Their Murders

Nick Reiner — the son of Rob and Michele Reiner, who’s been arrested on suspicion of murdering them — was missing for hours after his parents were found with their throats slit inside their Brentwood home … TMZ has learned.

Law enforcement sources say … after Rob and Michele’s daughter Romy found their bodies, she noted to police Nick had been living there and was possibly behind the murders.

When police responded to a call for a death investigation around 3:40 PM Sunday, Nick was nowhere to be found. Romy was the one who called 911 and told police her brother was “dangerous” and should be considered a suspect.

Romy told police Nick was not there when she arrived, insinuating he fled the scene. Police finally located and arrested Nick at approximately 9:15 PM Sunday.