A U.S. Marine heading back to the states from Tokyo, Japan, quickly stepped in and slammed a man to the ground and restrained him with zip ties after he allegedly grabbed the emergency exit door in the middle of a flight, according to reports.

NBC reported Sergeant Major Jody Armentrout was on Flight 114 from Tokyo to Houston when he saw a man acting suspiciously.

Armentrout, who has been in the Marines over 20 years, is stationed in Japan, and he told the media company he witnessed a suspicious man take his backpack to one bathroom before going from bathroom to bathroom.

“He came out of that one and began pacing up and down the aisle, so that just threw my radar on,” the 50-year-old Marine reportedly said during a phone interview.

The FBI’s Seattle office told Fox News Digital two people were removed from a flight from Tokyo to Houston that was diverted to Seattle. (Getty Images)

The flight continued to its destination after its stop in Seattle and landed in Houston without further incident.

No charges have been filed in the incident, the FBI said.

Prosecutors are reviewing reports and witness statements to determine if the case is appropriate for federal prosecution.

All Nippon Airways told Fox News Digital the flight was diverted due to an “unruly” passenger.

“While on the tarmac in Seattle, a second passenger became unruly,” the airline said. “Both were removed from the flight by the Port of Seattle Police.

“The safety of our passengers and crew are our top priority, and we applaud the efforts of local law enforcement for their support.”