US actor Chadwick Boseman poses for a photo. File

The cast of the Marvel Cinematic Universe are grieving the news that Chadwick Boseman has died.

Boseman, who appeared in the MCU as Black Panther, was diagnosed with colon cancer in 2016. He decided not to make the news public.

The 43-year-old died in Los Angeles on Friday 28 August, surrounded by his friends and family.

After the news was disclosed via a statement on Boseman's Twitter page, many of his fellow actors and co-stars paid tribute to the star, who was 43.

Letitia Wright, who achieved global fame for her performance as Shuri, the younger sister of King T'Challa (Boseman) in Black Panther, simply wrote: "This hurts. Really hurts."

Hulk actor Mark Ruffalo, who co-starred with Boseman in MCU films, including Avengers: Endgame, wrote: “All I have to say is the tragedies amassing this year have only been made more profound by the loss of #ChadwickBoseman.

He added: “What a man, and what an immense talent. Brother, you were one of the all-time greats and your greatness was only beginning. Lord love ya. Rest in power, King.”

Chris Hemsworth, who plays Thor, wrote: “Absolutely heartbreaking. One of the kindest most genuine people I’ve met.”

Brie Larson (Captain Marvel) posted a photo of her alongside Boseman, writing: “Chadwick was someone who radiated power and peace. Who stood for so much more than himself?”

Captain America star Chris Evans hailed Boseman as “a true original”, while long-time MCU star Samuel L Jackson said the actor was “a talented and giving artist & brother who will be sorely missed”.

Marvel Studios president Kevin Feige called Boseman’s death “absolutely devastating” in a touching statement about the actor’s on-set presence.

“Each time he stepped on set, he radiated charisma and joy, and each time he appeared on screen, he created something truly indelible,” Feige wrote, adding: “He was as smart and kind and powerful and strong as any person he portrayed – now he takes his place alongside them as an icon for the ages. The Marvel Studios family deeply mourns his loss, and we are grieving tonight with his family.”

Don Cheadle wrote: “I will miss you, birthday brother. You were always light and love to me. My god.”