Dustin Diamond's friends are sending positive vibes following the announcement of his cancer diagnosis.

On Thursday, a rep for the 44-year-old star, known best for playing Samuel "Screech" Powers on the beloved coming-of-age sitcom "Saved by the Bell," announced that he'd received a "severe" cancer diagnosis, though additional details weren't provided.

After the news broke, Diamond's "Saved by the Bell" co-stars have reached out to wish him well. 

Mario Lopez was among those to speak out, revealing that he also touched base with his former co-star.

'SAVED BY THE BELL' STAR DUSTIN DIAMOND DIAGNOSED WITH CANCER

"I connected with Dustin earlier this evening and although the news of his diagnosis is heartbreaking, we remain positive that he’ll overcome this," Lopez shared alongside a pair of photos of himself and Diamond: one throwback from the show and another more recent. 

Dustin Diamond has been diagnosed with cancer. (Photo by Noel Vasquez/Getty Images)

Dustin Diamond has been diagnosed with cancer. (Photo by Noel Vasquez/Getty Images)

"Praying for him & his family and for a speedy recovery," Lopez, who starred as A.C. Slater, added. "God Bless."

Tiffani Thiessen, who portrayed Kelly Kapowski, shared a photo on Instagram of her pal smiling and said, "Thinking of you Dustin."

Diamond's rep, Roger Paul, told Fox News on Thursday that the actor is "waiting for more test results" after being hospitalized earlier this week.

'SAVED BY THE BELL' ALUM DUSTIN DIAMOND HOSPITALIZED AS UNDERGOES TESTS, TEAM SAYS: 'HE'S SCARED BUT UPBEAT'

A member of Diamond's team also confirmed the news to Entertainment Weekly (EW) which reported he's undergoing treatment in a Florida hospital.

'Saved by the Bell' cast -- Pictured: (l-r) Lark Voorhies as Lisa Turtle, Ed Alonzo as Max, Tiffani Thiessen as Kelly Kapowski, Mark-Paul Gosselaar as Zack Morris, Dennis Haskins as Mr. Richard Belding, Elizabeth Berkley as Jessie Myrtle Spano, Dustin Diamond as Screech Powers, Mario Lopez as A.C. Slater.

'Saved by the Bell' cast -- Pictured: (l-r) Lark Voorhies as Lisa Turtle, Ed Alonzo as Max, Tiffani Thiessen as Kelly Kapowski, Mark-Paul Gosselaar as Zack Morris, Dennis Haskins as Mr. Richard Belding, Elizabeth Berkley as Jessie Myrtle Spano, Dustin Diamond as Screech Powers, Mario Lopez as A.C. Slater. (NBCU Photo Bank/NBCUniversal via Getty Images)

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The magazine, quoting a source close to Diamond, reported that he is "undergoing chemo" and it is expected he will remain in the hospital for another week. 

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Fox News' Julius Young contributed to this report