Gary Graham - who is best known for his work on Star Trek: Enterprise - has passed away at 73.

His ex-wife Susan Lavelle took to on Tuesday to reveal the sad news with a touching tribute.

She did not, however, reveal a cause of death nor any other details about the circumstances surround his passing.

Lavelle shared three snaps of the actor with the caption: '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. 

'We are completely devastated especially our daughter Haley. His wife, Becky was by his side.

'

Gary Graham - who is best known for his work on Star Trek: Enterprise - has passed away at 73

His ex-wife Susan Lavelle took to Facebook on Tuesday to reveal the sad news with a touching tribute as she 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'

Lavelle included a snap of their daughter Hayley with Gary on set as she asked that her followers keep her in their thoughts as she concluded: 'This was sudden so please pray for our daughter as she navigates through this thing called grief'

His ex-wife then went in to how they met before describing his personality. 

She wrote: 'I met Gary when I was just 20 years old and he was one half of the star duo on the tv series, Nation. But he had already been in movies like All The Right Moves with . Of course, Gary has many more credits.

'Gary was funny, sarcastic sense of humor but kind, fought for what he believed in, a devout Christian and was so proud of his daughter, Haylee.

'

Lavelle included a snap of their daughter Hayley with Gary on set as she asked that her followers keep her in their thoughts.

She concluded: 'This was sudden so please pray for our daughter as she navigates through this thing called grief.

'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. [two crying, one red heart, and three prayer hand emojis]'

Gary was best known for his recurring role as Soval, the Vulcan ambassador to earth in Star Trek: Enterprise. 

He portrayed the character over 12 episodes from 2001 to 2005.

Gary was best known for his recurring role as Soval, the Vulcan ambassador to earth in Star Trek: Enterprise

The talented actor was also the star of television series Alien Nation over all 22 episodes which aired over one season from 1989 to 1990

The talented actor was also the star of television series Alien Nation over all 22 episodes which aired over one season from 1989 to 1990.

Gary went on to star in five subsequent Alien Nation television films which aired from 1994 to 1997.