6:46 PM PT — The Harrison household tells TMZ … “Our household is extraordinarily saddened by the demise of Adam. We ask for privateness as we grieve his loss.”

Rick Harrison‘s son Adam has died below tragic circumstances … TMZ has discovered.

A rep for the ‘Pawn Stars’ actuality star tells us Adam just lately died from a deadly overdose … and we’re advised the household solely simply discovered at this time. Right now, it is unclear the place Adam was precisely when he handed — and the particular circumstances are additionally unknown at the moment.

Las Vegas Metro PD tells us they’re investigating the case.

Adam is considered one of Rick’s three youngsters — all boys — and he is been principally off the radar by way of Rick’s present and retailer. Phrase is … Adam helped out on the World Well-known Gold & Silver Pawn Store as soon as upon a time — however has since stepped away to do his personal factor.

He would not seem to have been featured in any of the episodes from what we will see.

Rick had two youngsters together with his first spouse Kim … Corey and Adam — and he additionally had a son, Jake, together with his second spouse, Tracy.

Whereas Rick’s oldest son Corey is closely concerned in “Pawn Stars,” first showing on the truth present manner again in 2009, Adam principally remained out of the highlight.

With Adam by no means actually getting concerned on the present, there’s not rather a lot recognized about him … although some people have claimed he made a residing as a plumber. We have heard he labored professionally in some type of commerce, however no phrase on what sort of job particularly.

Adam was solely 39.

RIP

Initially Revealed — 6:19 PM PT