"The reason I asked for [an investigation] is people who are operators came to me," he told CNN's "Starting Point." 

King, the chairman of the House Homeland Security Committee, raised questions last year about the access given to film director Kathryn Bigelow and screenwriter Mark Boal. A subsequent investigation by the Pentagon’s Inspector General office has been referred to investigators at the Justice Department.

"The Inspector General thought there was enough to refer it on to the Justice Department," King pointed out, emphasizing that the investigation is not his project, even though he is concerned about the process.

Bigelow and Boal have denied that they were given classified access in order to make the movie, and Boal has said several times that criticism of what he included in his script began "before I had even written a word."

He also dismisses much of the controversy, some of which prompted the studio to push back the film's release date past the presidential election.

"I don't care what he has to say," King said of Boal. "He doesn't decide what's sensitive and what's classified."

King also denied that his questions are motivated by politics.

"I have no problem with the movie. I give President Obama tremendous credit for killing Osama bin Laden," he said. "What I'm talking about is pressuring special operatives ... to cooperate with producers."

King also told CNN he has not seen the movie, which is expected to be an Oscar contender. Several lawmakers who did see the movie, which is open in limited release, protested its use of "enhanced interrogation" techniques.

Sens. Dianne FeinsteinDianne Emiel FeinsteinGrassley blasts Democrats over unwillingness to probe Clinton Avalanche of Democratic senators say Franken should resign Blumenthal: ‘Credible case' of obstruction of justice can be made against Trump MORE (D-Calif.), John McCainJohn Sidney McCainGOP strategist donates to Alabama Democrat Meghan McCain knocks Bannon: 'Who the hell are you' to criticize Romney? Dems demand Tillerson end State hiring freeze, consult with Congress MORE (R-Ariz.) and Carl LevinCarl LevinCongress: The sleeping watchdog Congress must not give companies tax reasons to move jobs overseas A lesson on abuse of power by Obama and his Senate allies MORE (D-Mich.) sent a letter to the film's studio, Sony, on Wednesday protesting the film's depiction of events. They say that linking the CIA's controversial use of waterboarding to the successful discovery, and ultimate killing, of bin Laden is both false and "dangerous."