Actor Josh Grisetti died by suicide on Friday, according to his friend and Broadway star Rob McClure. He was 44.

“It is with a shattered heart that I share that the brilliant Josh Grisetti took his own life on Friday,” McClure wrote on Instagram Sunday alongside a carousel of images of them together.

“I’m not ready to even attempt to understand. My heart is with his wife and family as they try to deal with the reality of this,” the “Good Fight” actor, also 44, added.

“Some of my all-time favorite memories were by this man’s side, playing his brother onstage for years, watching him inspire students while transforming the Musical Theatre program at Cal State Fullerton …and having the honor of being the Best Man at his wedding.”

McClure said he and his wife, Maggie Lakis, are “beyond heartbroken” by the tragic news.

“Communities around the world will never be the same without him. We love you Josh. Just a cataclysmic loss,” he wrote.

The “I’m Not Rappaport” star concluded his tribute by telling fans that info about Grisetti’s memorial will “come in time.”

In the comments section of McClure’s post, several stars penned their condolences.

“My sincerest sympathies 💔 sending so much love and care to his nearest and dearest,” wrote Ariana DeBose.

“❤️,” added Rachel Zegler.

This story is being updated…

If you or someone you know is affected by any of the issues raised in this story, call the National Suicide Prevention Lifeline at 800-273-TALK (8255) or text Crisis Text Line at 741741.

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