Alan Thicke Dead at 69

Actor Alan Thicke has passed away unexpectedly at the age of 69.

According to TMZ, Thicke died at Providence St. Joseph's Medical Center in Burbank earlier today after suffering a heart attack. He had been transported to the hospital, reportedly after playing hockey with his son Carter, 19.

Along with Carter, Alan is survived by his wife Tanya and sons Brennan and Robin, who is the internationally successful recording artist.

Thicke was best known for his role as Dr. Jason Seaver on seven seasons of the ABC sitcom "Growing Pains." He recently appeared on "This Is Us" and "Fuller House," and at the time of his death was the star of the mockumentary series "Unusually Thicke," along with Tanya and Carter.

Before attaining household-name status, Thicke hosted the short-lived talk show "Thicke of the Night" from 1983-1984. With ex-wife Gloria Loring, he composed TV theme songs, most memorably for "Diff'rent Strokes" and "The Facts of Life."

After news broke of his death, Robin paid tribute on Instagram, writing, “My Father passed away today. He was the best man I ever knew. The best friend I ever had. Let's all rejoice and celebrate the joy he brought to every room he was in. We love you Alan Thicke. Thank you for your love. Love, your grateful son.”

As the SAG nominations were being announced earlier this morning, “Extra's” Renee Bargh spoke to Sharon Lawrence, who worked with the late Alan Thicke on one of his final projects.

Lawrence, who played Thicke's wife on “I Like You Just the Way I Am,” shared, “It was such a privilege to spend time with him... If there is any grace in such a tragic loss, it's that he passed doing what he loved — hockey. My heart goes out to his family. I will never forget how much joy he brought to everybody he was around.” Watch.

Other celebs took to social media to mourn Alan's passing. See the tweets below!