ATLANTA -- Martin Lawrence has tweeted his support for his former co-star Tommy Ford.

Ford, 52, is hospitalized as he battles an unknown condition. A rumor spread on social media on Wednesday that the actor had passed away, but Ford's representative told 11Alive that he was not dead.

Ford played "Tommy" in the 1990s sitcom "Martin". The star of that show, Martin Lawrence, said for prayers for his co-star Wednesday.

"Prayers up for my brother @BigTommyFord and his family," Lawrence tweeted.

Ford posted pictures on his Instagram account earlier this month. It appears he had a knee replacement surgery and was on a road to recovery in a series of posts.

PHOTOS: Martin Lawrence