Mythbusters Star Dead at 49

Grant Imahara, longtime co-host of the beloved Discovery Channel science series MythBusters, has died. He was 49.

“We are heartbroken to hear this sad news about Grant,” a rep for Discovery Channel told The Hollywood Reporter on Monday night. “He was an important part of our Discovery family and a really wonderful man. Our thoughts and prayers go out to his family.”

Imahara — who spent several years working for Lucasfilm and Industrial Light & Magic — joined MythBusters during the show’s third season and remained a fixture on the series until his departure in 2014. Following MythBusters, he served as a co-host of Netflix’s White Rabbit Project.

The cause of Imahara’s death has not yet been disclosed.