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Omar Mateen, the terrorist who murdered 49 people at a gay nightclub in Orlando last weekend, appeared in a documentary about the BP oil spill, Gretchen Carlson reported this afternoon.

In the 2012 documentary "The Big Fix," Mateen is shown being interviewed while working as a security guard after the 2010 oil spill. 

In the clip, he criticized BP's cleanup efforts after the disaster. 

"No one gives a s*** here. Everybody's just out to get paid," Mateen said to a reporter.

"They're like hoping for more oil to come out and more people to complain so they'll have jobs. Once people get laid off here it's gonna suck for them. They want more disaster to happen cuz that's where their money-making is."

Mateen worked for security company G4S, which confirmed that Mateen is the person shown in the documentary.

G4S Solutions has been a major contractor for the Department of Homeland Security since 9/11, securing 90 percent of U.S. nuclear facilities.

Prior to Sunday's massacre, Mateen, 29, was working as a guard in a gated community in Florida. 

Daniel Gilroy, who worked as a guard with Mateen for a year, described Mateen's anger as "constant."

Gilroy said that he left the company because the employer wouldn't get rid of Mateen, and that his stalker-like behavior began to worry Gilroy and his family.

Watch the clip above.

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