Laura Prepon is grieving a tragic loss.

The That ‘70s Show alum shared that her family recently held a funeral for her brother Brad Prepon, who died unexpectedly last month at the age of 48.

“This past weekend, we laid my brother to rest,” Laura wrote on Instagram Aug. 5 alongside throwback pictures with Brad. “He passed away suddenly from an unknown heart condition—it was a devastating shock.”

While encouraging her followers to “please listen to your instinct” and seek medical help if it seems “something may be off,” the 46-year-old paid tribute to her sibling. 

“For those of you who knew Brad, I’m so happy he touched your lives,” she continued. “For those who didn’t, we lost a singular, beautiful, inimitable force. I will miss my brother every day, and carry him in my heart always.” 

The Orange Is the New Black actress added, “Hug the ones you love.”