Star Trek actor Gary Graham, who participated in the Star Trek: Enterprise series, died at the age of 73.

Susan Lavelle, Gary’s ex-wife, revealed the news on Facebook on Tuesday, sharing a poignant tribute alongside the news of her husband’s death. In a touching letter, Susan wrote: “It is with deep profound sadness to say that Gary Graham, my ex husband, amazing actor and father of our beautiful only child together, Haylee Graham, has passed away today.”

She continued: “We are completely devastated especially our daughter Haley. His wife, Becky was by his side.”

Susan writes on meeting her ex-husband: “I met Gary when I was just 20 years old and he was one half of the star duo on the TV series, Alien Nation. But he had already been in movies like All The Right Moves with Tom Cruise. Of course, Gary has many more credits. Gary was funny, sarcastic sense of humour but kind, fought for what he believed in, a devout Christian and was so proud of his daughter, Haylee.”

Susan then remarked on Gary’s “sudden” death, saying, “This was sudden, so please pray for our daughter as she navigates this thing called grief.”

She concluded, “Fly high into the heavens Gar! Thank you for our journey and thank you for the gifts you left me in acting, my love of horses and most importantly, our daughter.”

Gary’s career began in the 1970s and continued for five decades. In addition to his work in the Star Trek franchise, he is best known for his role as Detective Matthew Sikes on the television series Alien Nation from 1989 to 1990. He played Soval, the Vulcan envoy to Earth, on the television series Star Trek: Enterprise.