Actor Alan Thicke, best known for his role on Growing Pains, dead at age 69

Actor Alan Thicke has died suddenly, his publicist confirmed.

He was 69.

Carleen Donovan, who is a publicist for Thicke's son, singer Robin Thicke, says the actor died from a heart attack on Tuesday in Los Angeles. She had no further details.

Thicke was most well-known in his popular role of Dr. Jason Seaver in '80s ABC sitcom "Growing Pains."

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Thicke had a son and daughter. Thicke's son Robin is a well-known R&B performer.

Alan Thicke was a musician himself, credited as the composer for theme songs to popular sitcoms such as "Facts of Life" and "Diff'rent Strokes."

Thicke's Twitter account was active as recent as 4 p.m. Tuesday afternoon about his guest role in Fuller House.

In 1988, Alan Thicke joined with Jan Glenn and Don Nelson to host the ABC13 coverage of the Foley's Thanksgiving Day parade.

Alan Thicke's death sparked an instant outpouring of mourning and support on social media.

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The Associated Press contributed to this article.

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