Alyssa Milano, Ralph Macchio Tweet About Corey Haim

Alyssa Milano, Ralph Macchio Tweet About Corey Haim
Alyssa Milano and Ralph Macchio
Landov; JPI

03/10/2010 AT 11:50 AM EST

As news of Corey Haim's death spread over the Internet, celebrities took to Twitter to express their condolences over the troubled actor, who was found dead at his mother's home early Wednesday.

Alyssa Milano (who once dated Haim): Just woke up to the sad, sad news that Corey Haim passed away. RIP sweet boy.

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Christina Applegate: My thoughts go out to Corey's family and friends today. So sad.

• Ralph Macchio: Always so sad and disturbing when the addiction and demons prevail. RIP Corey Haim.

Khloe Kardashian: So sad! God bless!!!

Lisa Ling: Goodbye Lucus. RIP Corey Haim

Fans also expressed their sadness over the teen star's passing. Among them: "Tragedy takes the stage as the curtain falls prematurely on the kid with the smile and talent that charmed us all. RIP Cory Haim ..." and "ralph macchio, stay stafe. i can't handle another former heartthrob loss today."

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