“Pawn Stars' ”Rick Harrison Shares Tribute to Son Adam After His Death: ‘You Will Always Be in My Heart’

Adam Harrison died from an overdose, it was announced on Friday

Pawn Stars’ Rick Harrison is paying tribute to his late son, Adam Harrison.

Shortly after it was announced that Adam died of an overdose at age 39 on Friday, Rick, 58, shared a touching tribute to his son on Instagram.

"You will always be in my heart! I love you Adam. 💔,” he wrote alongside a photo of himself smiling with Adam at a bar.

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Related: Adam Harrison, Son of Pawn Stars Rick Harrison, Dead of Overdose at 39

Rick’s representative, Laura Herlovich, previously confirmed Adam's death to the Las Vegas Review-Journal.

"Our family is extremely saddened by the death of Adam. We ask for privacy as we grieve his loss," the Harrison family said in a statement shared with the outlet.

Adam, who is Rick’s oldest son, was the brother of Corey Harrison. Their mother is Rick’s first wife, Kim. (Rick also has a third son, Jake, with his second wife, Tracy.)

Corey, 40, similarly paid tribute to Adam in a touching post on Instagram, writing, "Wax wtf I will always love you bubba.”

Alongside his message, he shared an image of himself holding up a photograph of the brothers playing in a bathtub together as children.

Related: 'Pawn Stars' ' Richard 'Old Man' Harrison Dies at Age 77 After Battling Parkinson's Disease

Unlike his father Rick and brother Corey, Adam did not appear on Pawn Stars, a reality series that chronicles business at the World Famous Gold & Silver Pawn Shop in Las Vegas, Nevada.

An investigation into Adam's death is currently ongoing, the Las Vegas Metro Police told TMZ.

Herlovich and the Las Vegas Metro Police Department did not immediately respond to PEOPLE’s request for further comment on Friday.

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