Transcript for FBI questions suspect in latest air rage incident
We're going to turn next tonight to that chaos in midair. Authorities say an offduty flight attendant threatened to take down the plane. The pilot then calling on the intercom for passengers to help. Gio Benitez covers aviation for us. Reporter: Tonight, the FBI questioning the man at the center of the latest air rage incident. 34-year-old stephon Jamar Duncan, a delta flight attendant on leave, who allegedly made terroristic threats and assaulted two onduty flight attendants. The pilot cowling on the intercom for passengers to help. He very forcefully said, "I need all able-bodied men to come to the front of the plane immediately for an emergency." We're holding him down and he was screaming and crying. Reporter: The flight from L.A. To Atlanta making an emergency landing in Oklahoma City Friday night. Dun can suspected of having a mental health crisis. The case, just the latest in a string of shocking moments caught on tape. This southwest flight attendant attacked by a passenger just two weeks ago. The FAA now telling ABC news has it received more than 3,000 reports of unruly passengers on planes. The overwhelming majority are passengers refusing to wear a mask. The mask mandate is in place for a reason. It's in place because not everyone who boards a plane can get vaccinated yet. Reporter: The FAA threatening fines of $35,000 and as high as $50,000 for some of the violators. And David, right now, American and southwest are not serving alcohol, specifically because of this issue. But no word yet if other airlines will do the same. David? All right, gio Benitez reporting tonight. Gio, thank you.
This transcript has been automatically generated and may not be 100% accurate.