MythBusters co-host Grant Imahara has died aged 49.
The electrical engineer and TV show host reportedly died of a brain aneurysm on Monday.
"We are heartbroken to hear this sad news about Grant," a representative for Discovery Channel told The Hollywood Reporter.
"He was an important part of our Discovery family and a really wonderful man. Our thoughts and prayers go out to his family."
Imahara co-hosted more than 200 episodes of Mythbusters, joining the third season in 2005 until 2014, when he left with co-hosts Kari Byron and Tory Belleci.
The trio also featured in Netflix's White Rabbit Project in 2016, which lasted for one season.
Co-host and friend of Imahara, Kari Byron, tweeted a photo of the trio today, captioning: "Somedays I wish I had a time machine."
"I am so sad. Grant was my dude on Mythbuster. I always loved seeing what Tory, Kari and Grant were doing. My prayers are out to his family and friends," a Twitter user commented.
Mythbusters co-host Adam Savage also tweeted: "I'm at a loss. No words. I've been part of two big families with Grant Imahara over the last 22 years."
"Grant was a truly brilliant engineer, artist and performer, but also just such a generous, easygoing, and gentle PERSON. Working with Grant was so much fun. I'll miss my friend," he said.
Imahara's long term fiancee also shared her grief on Twitter.
"I haven't found the words. I don't know if I'll be able to. I lost a part of my heart and soul today. He was so generous and kind, so endlessly sweet and so loved by his incredible friends. I feel so lucky to have known him, to have loved & been loved by him. I love you, honey."
