Robert Downey Jr. abruptly ended and walked out of an interview on Wednesday after a line of personal questioning.

The 50 year old actor was speaking to Channel 4’s Krishnan Guru-Murthy about his new film Avengers: The Age of Ultron when he shut the whole thing down, saying “It’s getting a little Diane Sawyer in here,” referencing the famous news anchor.

The interview seemed to be going very well, with Guru-Murthy asking questions the character of ‘Iron Man’, the qualities that Downey has brought to the role, and whether he was a fan of comic book heroes and superheroes as a youngster.

Robert Downey JrRobert Downey Jr cut off an interviewer early after personal questioning

But about halfway through the clip, Guru-Murthy asked Downey about a quotation he gave to the New York Times a number of years ago about his incarceration, his past addictions with drugs and alcohol, his political views and about his family.

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Downey was initially happy to answer the questions, but when they kept coming he got a little edgy – saying “are we promoting a movie?” after the second question. At the third, he said sharply: “Your foot's starting to jump a little bit – so you’d better get to your next question.”

The final question from Guru-Murthy was: “The reason I'm asking you about the past is that you've talked in other interviews about your relationship with your father and the role of all of that in the dark periods you've been to, taking drugs and drinking and all of that. I'm wondering if you're free of all of that or if that's something you...”

Downey then interrupted him with “I’m sorry, what are we doing?” before getting up and removing his microphone.

A representative for Downey had no comment about the incident.

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You can watch the full interview in the video below