Green Book screenwriter Nick Vallelonga apologised for posting a tweet suggesting that American Muslims could be seen cheering 9/11. "I want to apologise," Vallelonga said in a statement issued on Thursday night.

"I spent my life trying to bring this story of overcoming differences and finding common ground to the screen, and I am incredibly sorry to everyone associated with Green Book. I especially deeply apologise to the incredibly brilliant and kind Mahershala Ali and all members of the Muslim faith for the hurt I have caused. I am also sorry to my late father, who changed so much from Dr Shirley's friendship, and I promise this lesson is not lost on me. Green Book is a story about love, acceptance and overcoming barriers, and I will do better," he added.