"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 FeinsteinFeinstein, Harris call for probe of ICE after employee resigns Jeh Johnson: Media focused on 'Access Hollywood' tape instead of Russian meddling ahead of election What’s genius for Obama is scandal when it comes to Trump MORE (D-Calif.), John McCainJohn Sidney McCainAfghanistan is our longest war ever and Congress has abandoned all responsibility Kremlin: ‘We have a long way to go’ before any breakthrough with US The GOP is Trump's party now MORE (R-Ariz.) and Carl LevinCarl Milton LevinSen. Gillibrand, eyeing 2020 bid, rankles some Democrats The Hill's 12:30 Report Congress needs bipartisanship to fully investigate Russian influence 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."