Bruce Willis is stepping away from his acting career.

The actor's family revealed the news in a series of social media posts, in which they revealed that the 67-year-old Die Hard star had been diagnosed with aphasia.

Per the official NHS website, aphasia is a condition of the brain that affects a person's ability with words, most notable in their speech, reading, listening, and writing/typing.

Following the heartbreaking news, actor Rob Gough has spoken out about working with Willis in what has become one of the Hollywood legend's final movies.

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The pair worked together back in November while working on the upcoming movie, American Siege. Sharing two images of the two actors hanging out on set, Gough captioned the post:

"Honored and blessed to have worked with and spend time getting to know the legend Bruce Willis. Thinking of him and his family as they maneuver through this next chapter."

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Gough isn't the only one of Willis' co-stars to speak out following news of the star's diagnosis.

Famed director M. Night Shyamalan - who worked with Willis on The Sixth Sense and the Unbreakable series - tweeted out: "All my love and respect to my big brother Bruce Willis. I know his wonderful family is surrounding him with support and strength. He will always be that hero on that poster on my wall as kid."

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Additionally, Die Hard 2 star William Sadler tweeted: "Take a bow Bruce. Thanks for all the amazing moments and good luck with the road ahead. #BruceWillis".

News of Willis' diagnosis was revealed to fans on Wednesday, with his family writing in a shared statement: "To Bruce’s amazing supporters, as a family we wanted to share that our beloved Bruce has been experiencing some health issues and has recently been diagnosed with aphasia, which is impacting his cognitive abilities. As a result of this and with much consideration Bruce is stepping away from the career that has meant so much to him."

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The statement continued: "This is a really challenging time for our family and we are so appreciative of your continued love, compassion and support. We are moving through this as a strong family unit, and wanted to bring his fans in because we know how much he means to you, as you do to him.

"As Bruce always says, 'Live it up' and together we plan to do just that.

"Love, Emma, Demi, Rumer, Scout, Tallulah, Mabel, & Evelyn".

We continue to wish Willis and his family all the best at this time.

Featured image credit: WENN Rights Ltd / Alamy

Bruce Willis costar Rob Gough gushes over actor after working with him in one of his final roles