Oscar-nominated director John Singleton is in intensive care after a stroke.
The filmmaker, known for films like Boyz n The Hood, Shaft and 2 Fast 2 Furious, fell ill on Wednesday, his family said.
Singleton, 51, is now in hospital "in excellent medical care," they said.
The statement states: "On Wednesday, April 17, our beloved son, John Singleton, suffered a stroke at the hospital.
"John is currently in intensive care and is well looked after medically."
They added, "We ask that he and our family be given privacy at this time, and we appreciate all the prayers that have come in from his fans, friends and colleagues."
The statement was signed by the Singleton family, including its four children.
Following the news of the stroke, friends and colleagues sent their best wishes.
Rapper Snoop Dogg shared a picture of the couple on Instagram and wrote: "Pray 4 my brother".
Brian Koppelman, the co-founder of Billions, a television drama directed by Singleton Episodes, said working with him was a "career highlight".
Chicago Fire co-founder Derek Haas said, "John Singleton is a wonderful person. Get well soon!"
Actress Nia Long wrote: "This morning hard for my friend @johnsingleton PULL THROUGH BABY."
Singleton's Los Angeles-based films often deal with issues of urban violence.
For his film Boyz n The Hood from 1991, he received an Oscar nomination for Best Director. He was the first African American nominee and the youngest ever.