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Alec Baldwin got into a fiery Twitter feud with the producer Dana Brunetti over claims made in Baldwin’s book that he didn’t know Nikki Reed was underage when they filmed “Mini’s First Time.”

Baldwin writes in “Nevertheless,” “I was 47, and it never occurred to me to ask how old Nikki Reed was. When I found out, just as we finished, that she was 17, I flipped out on the producers, who had told me something different.”

Brunetti, who worked on the film, denied Baldwin’s claim and took to social media on Tuesday to insist Baldwin knew what Reed’s age was – 16 – while making the film.

PRODUCER SAYS ALEC BALDWIN KNEW NIKKI REED WAS UNDERAGE

Baldwin fired back on Twitter on Wednesday night, which led to a furious back-and-forth between the two moviemakers.

In the heated exchange, Brunetti called Baldwin a “fool” and warned the actor “I’ll bury you.” Baldwin responded by calling the producer an “idiot” and “Hollywood zombie” claiming that Brunetti sent Relativity Media into bankruptcy while he was president there.

To that, Brunetti replied, “Again, you don't know what you're talking about. It was [bankrupt] before I got there. What else you got angry man?”

Brunetti argued that Baldwin knew Reed was 16 during the filming of “Mini’s First Time” because she had just finished working on “13.”

Baldwin charged that the Screen Actors Guild requires releases for “scenes involving physical contact with minors” and demanded Brunetti produce a copy of Reed’s release.

“If required, I'm sure there is one. But really, are you going to continue to deny that you didn't know she was 16?? I'll bury you,” Brunetti replied.

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The producer asked filmmaker Nick Guthe, who worked on the movie, to chime in.

“1) Because she was 16 we had to submit storyboards to her parents, agents and managers of all scenes with physical contact.

Baldwin repeatedly requested Brunetti produce documents related to filming.

Baldwin’s “Nevertheless” hit bookstores on Tuesday.