Social media reacts to actor Alan Thicke's death

Social media lit up Tuesday night with tributes to legendary TV actor Alan Thicke, after news of his death began circling the web.

The 69-year-old’s death was first reported by TMZ, which said the Canadian-born actor died suddenly of a heart attack.

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Celebrities and fans subsequently took to Twitter to honor Thicke, best known for his role as the father on “Growing Pains.”

See some of the heartfelt tweets below.