Actor Powers Boothe, well known for his roles in Agents Of Shield and Deadwood, died in his sleep of natural causes on Sunday. He was 68.

Boothe's publicist, Karen Samfilippo, broke the news of his death. She further shared that a private memorial service will be held shortly in Texas, which was the state he was born in.

Renowned for his acting work, Boothe was well known for taking up roles of darker characters in television. With his demeanor and charm, Boothe's work earned him praise and strong reviews from critics.

Boothe married his wife Pam in 1969. The two were high school sweethearts and had two children together. Born in Snyder and growing up on a cotton farm, Boothe started his acting career on stage in plays before he broke out as a mainstream actor for his role in Guyana Tragedy: The Story Of Jim Jones, of which he had the lead role. Boothe's portrayal earned him an Emmy and rave reviews from critics, which further catapulted his career into the spotlight. Boothe received his Emmy during the Screen Actors Guild strike, and was one of the few to accept his award in person. "This is either the most courageous moment of my careers or the stupidest," Boothe announced when crossing a picket line and receiving the award, according to The Hollywood Reporter.

Among his other credits are his work on Sin City, Nixon, and Nashville. A memorial celebration is being considered by his family for a later date.

RIP Mr. Boothe. You will be missed.