Heath Freeman has died at the age of 41.
The actor, best known for his role as serial killer Howard Epps in Bones, died in his sleep according to former Miss USA Shanna Moakler.
The model was one of many stars to pay tribute to the actor.
Taking to social media on Sunday, Shanna shared a selection of snaps of the pair and said: "Heartbroken to hear of the loss of my dear friend Heath Freeman, talented actor, director, producer, outstanding chef and a solid friend.
"You will be so dearly missed and I will cherish every amazing memory we all had…. and we have a lot of great ones!! Godspeed."
As well as his role on Bones, Heath starred in a number of big-name series, including ER in 2001, NCIS, The Closer and Without a Trace.
He also played Gavin Dillon in Raising The Bar and worked as a voice actor for Spartacus: Blood and Sand.
IMDB states that he was set to star in the films Terror on the Prairie and Devil’s Fruit with both set for release next year.
The cause of his death is currently unknown.
As well as Shanna, director Ariel Vromen also paid her respects to the star, commenting on Shanna's post: "So sad."
Actor Assaf Cohen said: "Saddened to hear about the passing of @heathfreeman. My first S. California production was a show at South Coast Rep with Heath. He was classy, earnest and of course, extremely talented.
"Gone way too soon. Flights of angels, Heath."
Pretty Little Liars alum Ashley Benson also commented on her Instagram Stories: "I'll love you forever @heathmonster RIP."
And fans were also on hand to share messages of condolence on social media.
One Twitter user wrote: "This news is absolutely horrible. Heath and Shiloh were so great in #Skateland and Heath's brother directed it."
Actor Shiloh Fernandez also said: "He was the big brother I always wanted. He was so smart, so charming, so deep, so generous and such a damn force of nature - like I'd never seen before.
"And I was so lucky to be embraced as his little brother - it brought me so much magic. So much magic. I'm so beyond grateful for every second I had with you, @heathmonster - and everyone who he loved that I in turn, get to love - I'm grateful to him for them as well. I hate to do this but this man deserves a hearty goodbye for now because he was a damn comet, and those don't come around too often."
